CN104410658B - Fixed-point environment state forecast method and apparatus - Google Patents

Fixed-point environment state forecast method and apparatus Download PDF

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Publication number
CN104410658B
CN104410658B CN201410539038.6A CN201410539038A CN104410658B CN 104410658 B CN104410658 B CN 104410658B CN 201410539038 A CN201410539038 A CN 201410539038A CN 104410658 B CN104410658 B CN 104410658B
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ambient condition
forecast
precipitation
user
point
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CN104410658A (en
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袁行远
李娟�
龚颖坤
苑明理
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BEIJING CAICHE QUMING TECHNOLOGY Co Ltd
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BEIJING CAICHE QUMING TECHNOLOGY Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/26Push based network services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/18Network-specific arrangements or communication protocols supporting networked applications in which the network application is adapted for the location of the user terminal

Abstract

The present invention provides a kind of fixed-point environment state forecast method and apparatus, and the present invention provides a kind of fixed-point environment state forecast method, including:Obtain the geographical location information of user, obtain the ambient condition forecast data in the geographical location preset time range, ambient condition prediction curve of the geographical location in the time range is generated according to the ambient condition forecast data, obtain the environmental condition change point on the ambient condition prediction curve, the ambient condition generated according to the environmental condition change point in the preset time range forecasts sentence, and ambient condition forecast sentence is pushed to the user.By being pushed to user with the ambient condition forecast information of natural language description, user can intuitively find out the ambient condition changed specific time in preset time range.

Description

Fixed-point environment state forecast method and apparatus
Technical field
The present invention relates to weather forecast technology, more particularly to a kind of fixed-point environment state forecast method and apparatus.
Background technology
Proverb and ballad source on weather and environment are far spread, but until the modern meteorology foundation of 18th century, are just had The weather forecast of science.Until today, the weather forecast of mainstream is still the form by Weather Discussion, pre- with artificial weather The person of report, comprehensive a variety of numerical models issue the weather condition in a city certain time.But a urban size is vast, The situation of east sunrise west rain happens occasionally, moreover, manually issue needs judgement and flow, issue timeliness is not high enough, has When be unable to catch up with the change of weather, the description of artificial weather forecast is difficult to accomplish precisely.
The appearance of internet and satellite positioning tech so that the service based on individual position becomes possibility, internet day The constraint of TV programme has been broken away from gas forecast, and people can check weather, but the timeliness forecast and place essence whenever and wherever possible The problem of true property, is not well solved still, has thus expedited the emergence of fixed point rainfall forecast technology.
Pinpoint weather forecast and pass through global positioning system (Global Positioning System, the abbreviation on mobile phone GPS) know the position of user, calculate the weather condition in the certain time of the place, represent weather with icon, and pass through gas As figure shows the weather condition around the position.Existing fixed point weather forecast technology can only provide user's ambient weather Situation, for example whether it is rainy, whether have haze etc., can not still meet readable aspect of the user for forecast accuracy and description Requirement, user is difficult intuitively therefrom to obtain desired information.
The content of the invention
The present invention provides a kind of fixed-point environment state forecast method and apparatus, automatically generates the environment shape of user position The natural language description of state situation, really brings ordinary people advanced science and technology.
First aspect present invention provides a kind of fixed-point environment state forecast method, including:Obtain the geographical location letter of user Breath, obtains the ambient condition forecast data in the geographical location preset time range, according to the ambient condition forecast data Ambient condition prediction curve of the geographical location in the time range is generated, is obtained on the ambient condition prediction curve Environmental condition change point, the ambient condition generated according to the environmental condition change point in the preset time range forecasts language Sentence, the user is pushed to by ambient condition forecast sentence.By to user push with natural language description it is default when Between in the range of ambient condition forecast information, user can intuitively find out that ambient condition is changed in preset time range The specific time.
Second aspect of the present invention provides a kind of fixed-point environment state forecast method, including:Obtain the geographical location letter of user Breath;The ambient condition for obtaining the geographical location predeterminable area quantifies value matrix, the ambient condition quantify value matrix with it is described The ambient condition quantized value of each subregion corresponds in predeterminable area;Determine user son residing in the predeterminable area Region, and the user corresponding point in the ambient condition quantifies value matrix;Determine environment shape in the predeterminable area State quantized value is more than zero subregion;Determine subregion of the environment quantity of state value more than zero and the use in the predeterminable area The position relation between subregion residing for family;By the ring of subregion of the environment quantity of state value in the predeterminable area more than zero In border state and predeterminable area environment quantity of state value more than zero subregion and the user residing for subregion between side Position relation, is combined as ambient condition forecast sentence;Ambient condition forecast sentence is pushed to the user.By to user Push can intuitively find out preset areas with the ambient condition forecast information in the range of the predeterminable area of natural language description, user The specific location for the ambient condition distribution that user is concerned about in the range of domain.
Third aspect present invention provides a kind of fixed-point environment state forecast device, including:Acquisition module, for obtaining user Geographical location information and the geographical location preset time range in ambient condition forecast data;Processing module, for root Ambient condition prediction curve of the geographical location in the time range is generated according to the ambient condition forecast data, is obtained Environmental condition change point on the ambient condition prediction curve, the preset time is generated according to the environmental condition change point In the range of ambient condition forecast sentence;Sending module, for ambient condition forecast sentence to be pushed to the user.
Fourth aspect present invention provides a kind of fixed-point environment state forecast device, including:Acquisition module, for obtaining user Geographical location information and the geographical location predeterminable area ambient condition quantify value matrix, the ambient condition quantized value square Battle array is corresponding with the ambient condition quantized value of each subregion in the predeterminable area;Processing module, for determining that the user exists Residing subregion in the predeterminable area, and the user corresponding point in the ambient condition quantifies value matrix;Really Environment quantity of state value is more than zero subregion in the fixed predeterminable area;Determine environment quantity of state value in the predeterminable area The position relation between the subregion residing for subregion and the user more than zero;By environment quantity of state in the predeterminable area Subregion of the environment quantity of state value more than zero and the use in the ambient condition and predeterminable area of subregion of the change value more than zero The position relation between subregion residing for family, is combined as ambient condition forecast sentence;Sending module, for by the environment shape State forecast sentence is pushed to the user.
Based on above-mentioned, fixed-point environment state forecast method and apparatus provided by the invention, automatically generate user position Ambient condition situation natural language description, by being pushed to user with the ambient condition forecast information of natural language description, User can be intuitively found out in preset time range in the range of ambient condition changed specific time and/or predeterminable area The specific location for the ambient condition distribution that user is concerned about.Relative to the prior art, accuracy and the description of forecast are improved Readability, user intuitively can therefrom obtain desired information.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment Attached drawing make one to simply illustrate, it should be apparent that, drawings in the following description are some embodiments of the present invention, for ability For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached Figure.
Fig. 1 is the fixed-point environment state forecast method flow diagram that one embodiment of the invention provides;
Fig. 2 is the fixed point precipitation forecast method flow chart that one embodiment of the invention provides;
Fig. 3 is one embodiment of the invention linear interpolation method schematic diagram;
Fig. 4 is the precipitation forecast curve synoptic diagram of one embodiment of the invention;
Fig. 5 is the fixed-point environment state forecast method flow diagram that further embodiment of this invention provides;
Fig. 6 is the fixed point precipitation forecast method flow chart that further embodiment of this invention provides;
Fig. 7 is the fixed point precipitation forecast schematic device that one embodiment of the invention provides;
Fig. 8 is the fixed point precipitation forecast schematic device that further embodiment of this invention provides;
Fig. 9 is the fixed point precipitation forecast schematic device that yet another embodiment of the invention provides.
Embodiment
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and it is detailed to coordinate attached drawing to make Carefully it is described as follows.
Fixed-point environment state forecast method provided in an embodiment of the present invention specifically can be applied to carry out by client terminal The process of ambient condition forecast, can be realized, the fixed-point environment state forecast device by fixed-point environment state forecast device It can be integrated in client terminal, can also be separately provided, which can be by software and/or hard The mode of part is realized.Client terminal can be specifically that computer, smart mobile phone, tablet computer, set-top box, vehicle mounted guidance etc. are set It is standby.
Fig. 1 is the fixed-point environment state forecast method flow diagram that one embodiment of the invention provides.As shown in Figure 1, this implementation The fixed-point environment state forecast method that example provides includes:
Step 10, the geographical location information of user is obtained;
Specifically, the geographical location information of user is obtained by location client terminal.It should be noted that in the present embodiment The mode for obtaining the geographical location information of user includes but not limited to gps satellite positioning, network positions, mobile communication technology positioning And scene Recognition positioning etc..Corresponding positioning method is selected according to the type of client terminal.
Step 20, the ambient condition forecast data in the geographical location preset time range is obtained;
Specifically, ambient condition forecast data is specially precipitation forecast data, temperature forecast data, prediction of air quality number According to, wind direction and wind speed forecasting data.Fixed-point environment predictor can obtain the geographical position by accessing the modes such as internet Put the ambient condition forecast data in preset time range.
Step 30, environment of the geographical location in the time range is generated according to the ambient condition forecast data State forecast curve;
Wherein, precipitation forecast curve represents the geographical location feelings that precipitation changes over time in the time range Condition.
Step 40, the environmental condition change point on the ambient condition prediction curve is obtained;
For example, environmental condition change point can be that precipitation changes from zero to be more than zero or changes to zero from more than zero Point, the point that precipitation diminishes by greatly or becomes larger by small, or temperature again height begin to decline or begun to ramp up by low The similar state change point such as point.
Step 50, the ambient condition generated according to the environmental condition change point in the preset time range forecasts language Sentence;
Specifically, can with included in extraction environment state change point time, the information such as environmental condition change trend, by this A little information are combined, build environment state forecast sentence.
Step 60, ambient condition forecast sentence is pushed to the user.
Specifically, ambient condition can be forecast that sentence was sent to client's end of user by fixed-point environment state forecast device End, is shown in the display interface of client terminal, can also send word message to user, can also pass through voice broadcast Mode reports the ambient condition forecast sentence of generation to user, can also show the environment in the display interface of client terminal Voice broadcast is carried out while state forecast sentence, the present embodiment is not limited in any way this.
Fixed-point environment state forecast method provided in this embodiment, automatically generates the ambient condition situation of user position Natural language description, by user push with the ambient condition forecast information of natural language description, user can be intuitively Find out the ambient condition changed specific time in preset time range.Relative to the prior art, the accurate of forecast is improved Degree and the readability of description, user intuitively can therefrom obtain desired information.
The present invention is specifically further described exemplified by pinpointing precipitation forecast method.These embodiments be for illustrating, And not it is used for limiting the present invention.
Fig. 2 is the fixed point precipitation forecast method flow chart that one embodiment of the invention provides.As shown in Fig. 2, the present embodiment carries The fixed point precipitation forecast method of confession includes:
Step 11, the geographical location information of user is obtained;
Step 12, the precipitation forecast data in the geographical location preset time range are obtained.
Specifically, fixed point precipitation forecast device can obtain the geographical location preset time range by accessing internet Interior precipitation forecast data, such as by accessing the weather forecast application Program Interfaces (Application of Google Programming Interface, abbreviation API), the weather forecast API of meteorological observatory and other weather forecast interfaces obtain day Destiny evidence, certainly, the mode that the present embodiment obtains precipitation forecast data are not limited thereto.The preset time range can be System is fixedly installed or user passes through what the request of client terminal input inquiry was set, the preset time range tool Body can be in units of hour, day, week or moon etc., using current point in time as start time.
Step 13, precipitation forecast of the geographical location in the time range is generated according to the precipitation forecast data Curve.
Wherein, precipitation forecast curve represents the geographical location feelings that precipitation changes over time in the time range Condition.
Step 14, the precipitation state change point on the precipitation forecast curve is obtained.
Change from zero to be more than zero or change to zero from more than zero specifically, precipitation state change point can be precipitation Point, the point that precipitation diminishes by greatly or becomes larger by small.
In other words, if precipitation forecast curve is regarded as the letter that precipitation changes over time in the time range Number image, then precipitation state change point is exactly the flex point in the functional image.
Step 15, the precipitation forecast sentence in the preset time range is generated according to the precipitation state change point.
Specifically, the information such as the time included in precipitation state change point, annual precipitation changes trend can be extracted, by these Information is combined, and generates precipitation forecast sentence.
Step 16, the precipitation forecast sentence is pushed to the user.
Specifically, specific push mode can be selected according to the difference of precipitation forecast sentence.If for example, precipitation Without precipitation state change point on prediction curve, that is, in the case of there is no precipitation state change in preset time range, in visitor The display interface of family terminal shows precipitation forecast sentence;If there is precipitation state change point on the precipitation forecast curve, that is, In the case of having precipitation state change in preset time range, precipitation forecast sentence is shown in the display interface of client terminal, together When precipitation forecast sentence is reported to user.
Furthermore it is also possible to precipitation forecast curve of the geographical location of generation in the time range is also sent to The client terminal of user, is shown in the display interface of client terminal, so as to for reference.
Fixed point precipitation forecast method provided in this embodiment, due to the precipitation shape according to corresponding precipitation forecast curve acquisition Include the information such as corresponding time, annual precipitation changes trend in state change point, these information are combined, are generated with nature The precipitation forecast sentence of language description, user can intuitively find out that precipitation state is changed specific in preset time range Time.The accuracy of forecast and the readability of description are improved, user intuitively can therefrom obtain desired information.
Fixed point precipitation forecast method provided in this embodiment can also include as follows on the basis of embodiment illustrated in fig. 2 Step:
Receive the precipitation forecast request message that the user sends.
Specifically, when user goes for the geographic location sometime precipitation forecast information of scope, Ke Yitong Cross client terminal and send precipitation forecast request message set point precipitation forecast device.Pinpoint precipitation forecast device and receive the use After the precipitation forecast request message that family is sent, obtain in the geographical location information and the geographical location preset time range of user Precipitation forecast data, ultimately generate precipitation forecast sentence, precipitation forecast sentence be sent to user.
Optionally, user can be asked when sending precipitation forecast request message fixed point precipitation forecast device forecast it is following certain Precipitation forecast in the range of one time.That is, user can be with sets itself preset time range.
Further, in the present embodiment, step 13, the geographical location is generated in institute according to the precipitation forecast data The precipitation forecast curve in time range is stated, specifically may include steps of:
The precipitation forecast data are generated into precipitation of the geographical location in the time range by interpolation method Forecast data set;
Assuming that it is all real number that prediction rainfall, which is series of points (x, y), wherein x and y, y represents rainfall size, and x is represented Time.Assume that unit rain amount unit is mm hr, and chronomere is minute.So (5,15) represent, 5 minutes with Rainfall afterwards is 15 mm hrs.We can use coordinate (x if two prediction rainfalls, difference0, y0)、(x1, y1) Represent, x can be obtained by interpolation method0Time and x1Rainfall between time.The present embodiment is carried out by taking linear interpolation as an example Schematically illustrate.
Fig. 3 is one embodiment of the invention linear interpolation method schematic diagram, refer to Fig. 3, it is assumed that we are known coordinate (x0, y0)、(x1, y1), to obtain (x0, x1) values of certain position x on straight line in section.According to Fig. 3, it can be deduced that:
Due to x values, oneself knows, it is possible to obtains the value of y from formula:
It should be noted that the precision of the precipitation forecast data acquisition system in time is preset value, it is possible to understand that precipitation Forecast data is integrated into temporal precision as Precipitation Forecast per minute, every five minutes Precipitation Forecast etc..Obviously, on Example is stated to be intended merely to schematically illustrate using minute as chronomere, rather than for limiting the present invention.It is appreciated that, it is assumed that Preset time range is arranged to two weeks following, can select hour or day accordingly as chronomere, corresponding rainfall list Position can be mm hr or mm day.The interpolation method that the present embodiment uses can be linear interpolation algorithm, cubic spline The difference approach of the routine such as interpolation algorithm, Ai Er meter Te interpolation algorithms, the present embodiment are not construed as limiting this.
The precipitation forecast curve is generated according to the precipitation forecast data acquisition system.
It will be apparent that the precipitation forecast data time interval in the acquired geographical location preset time range is compared Greatly, can not meet to make requirement of the detailed precipitation forecast for time precision.Ordinary circumstance, passes through the weather forecast API of meteorological observatory It is every half an hour corresponding Precipitation Forecast data to obtain the geographical location precipitation forecast data three hours following.Pass through The corresponding Precipitation Forecast data every five minutes can be obtained after interpolation method processing.It is appreciated that when time precision is preset For one minute or ten minutes, correspondingly, can be obtained by after being handled by interpolation method corresponding every one minute or ten minutes Precipitation Forecast data.Every the geographical location of five minutes (or one minute/ten minutes) precipitation forecast three hours following Data form precipitation forecast data acquisition system.Thus, it is possible to which the precipitation is generated according to the precipitation forecast data acquisition system Prediction curve.
In practical applications, the interpolation algorithms such as linear interpolation, cubic spline interpolation, Ai Er meter Te interpolation can be used. In the present embodiment, it is preferred that generate precipitation forecast curve using cubic spline interpolation algorithm process.It is appreciated that using three times The precipitation forecast curve of Based on Interpolating Spline processing generation handles the precipitation forecast curve meeting of generation relative to linear interpolation algorithm More smooth, the precipitation forecast data acquisition system accuracy obtained by cubic spline interpolation algorithm process is more preferable.
Further, in the present embodiment, step 14, the precipitation state change point on the precipitation forecast curve is obtained, Specifically it may include steps of:
Obtain in the precipitation forecast data acquisition system, the first-order difference absolute value of precipitation be less than first-order difference critical value, Second differnce absolute value is more than the change point of second differnce critical value;
Specifically, first-order difference critical value and second differnce critical value can be preset, and first-order difference critical value and Second differnce critical value is positive number.Obtain precipitation forecast data acquisition system in the corresponding first-order difference sequence of Features of Precipitation Sequence and Second differnce sequence, by comparing first-order difference absolute value and first-order difference critical value, second differnce absolute value and second order successively The magnitude relationship of difference critical value, finds out first-order difference absolute value and is more than less than first-order difference critical value, second differnce absolute value The change point of second differnce critical value.
By in the change point, it is more than preset time threshold and previous change with the time interval of previous change point The precipitation interval of point is more than the change point of default precipitation threshold value as the precipitation state change point.
Specifically, minimum interval can be preset as time threshold and minimum rainfall interval as precipitation Threshold value.First-order difference critical value is less than according to first-order difference absolute value, second differnce absolute value is looked for more than second differnce critical value Go out above-mentioned change point, can be using the nearest change point of selected distance current point in time as first precipitation state change point, then The time interval between change point thereafter and previous change point and precipitation interval are calculated successively, are found out and previous change The time interval of point is more than preset time threshold and the precipitation interval of previous change point is more than the change for presetting precipitation threshold value Change point as other precipitation state change points.
If precipitation forecast curve is regarded as the functional image that precipitation changes over time in the time range, Precipitation state change point is exactly the flex point in the functional image.The precipitation forecast data acquisition system can also be regarded as described The function that precipitation changes over time in time range, it is clear that this is a discrete function, discrete function flex point can be used to calculate Method obtains the state change point in the precipitation forecast data acquisition system.
In the present embodiment, it can also be defined using other methods using definition mathematically, find out the drop The changed point of Precipitation Tendency on water prediction curve.
Further, in the present embodiment, step 15, the preset time model is generated according to the precipitation state change point Interior precipitation forecast sentence is enclosed, specifically may include steps of:
If without precipitation state change point on the precipitation forecast curve, by the preset time range and current precipitation group It is combined into the precipitation forecast sentence;
If current point in time and the precipitation are judged successively there are precipitation state change point on the precipitation forecast curve Annual precipitation changes trend in state change point between adjacent 2 points, by phase in current point in time and the precipitation state change point Annual precipitation changes trend and the precipitation state change point corresponding time between 2 points adjacent are combined as the precipitation successively Forecast sentence.
If specifically, without precipitation state change point on the precipitation forecast curve, according to current precipitation and it is default when Between scope, current precipitation and default time range are combined as precipitation forecast sentence, for example, when preset time range be three Hour, current precipitation is more than zero, can generate precipitation forecast sentence as " following three hours are rainy always ", can also be described as Similar sentences such as " rain can also continue three hours ".It is, it can be centered in fixed point precipitation forecast dress corresponding current The combination of precipitation and default time range generates precipitation forecast sentence.Further, it is also contemplated that some its His factor, can add the prompt statement of some hommizations in the precipitation forecast sentence.It is for example, " three hours one following It is straight rainy, go out and remember to carry rain gear!", " future snow always within two hours, it is noted that it is antifreeze!" etc., such as in view of the time because Element, for example to night (23 points between 6:00 AM), precipitation forecast sentence can be that " future will not rain for three hours, also exist Overtime work, takes a good rest!" etc..The specific descriptions of precipitation forecast sentence are not limited with the present embodiment.
If it can extract what is included in precipitation state change point there are precipitation state change point on the precipitation forecast curve The information such as time, annual precipitation changes trend.These information are combined, generate precipitation forecast sentence.Specifically, need first to sentence Annual precipitation changes trend in disconnected current point in time and the precipitation state change point between adjacent 2 points, then extraction judge knot Fruit, the precipitation forecast sentence is combined as by corresponding temporal information and judging result successively.
In order to further illustrate fixed point precipitation forecast method provided in this embodiment, illustrate below by one It is bright.This example is only used for making schematical explanation to fixed point precipitation forecast method provided in this embodiment, and non-limiting.
Assuming that by step 11~14, precipitation forecast curve and institute of the geographical location in the time range are obtained It is A (t to state the precipitation state change point on precipitation forecast curve1, v1)、B(t2, 0), the coordinate of wherein 2 points of A, B is corresponding It is time and the precipitation of the point, current point in time is O (0, v0), wherein 0<v0<v1.First determine whether current point in time O (0, v0) With state change point A (t1, v1) between annual precipitation changes trend become larger by small for precipitation;Then state change is judged Point A (t1, v1) and state change point B (t2, 0) between annual precipitation changes trend be precipitation from diminishing up to rain stops greatly.Extraction The corresponding temporal informations of precipitation state change point A, B are respectively t1Minute and t2Minute, it will determine that result and precipitation state change point A, the B corresponding times are combined as precipitation forecast sentence successively, can be described as that " present rain is becoming larger, t1Rain starts to become after minute It is small, until t2Rain stops after minute ".
Further, in the present embodiment, fixed point precipitation forecast method further includes following steps:
Generate precipitation and the mapping relations of rain estimation;Precipitation in the precipitation forecast sentence is used corresponding Rain estimation represents.
Specifically, the grade of construction precipitation size:0-without rain, precipitation it is less than 0.25 mm hr;1-light rain, Precipitation is between 0.25~1.0 mm hr;2-moderate rain, precipitation is between 1.0~4.0 mm hrs;3-heavy rain, Precipitation is between 4.0~16.0 mm hrs;4-heavy rain, precipitation are more than 16.0 mm hrs.
Precipitation and the mapping relations of rain estimation are constructed, precipitation is mapped to the grade area of corresponding precipitation size Between, the precipitation in the precipitation forecast sentence is represented using corresponding rain estimation.When in preset time range (be, for example, Three hours) precipitation forecast curve on without precipitation state change point when, current precipitation is mapped to corresponding precipitation size Grade interval, such as current precipitation size is 15 mm hrs, is mapped to the grade interval of precipitation size and corresponding is Heavy rain, then the precipitation forecast sentence can be described as " future have heavy rain always within three hours ".The specific of precipitation forecast sentence is retouched State and be not limited with the present embodiment.
, here can be after correspondingly, when there is precipitation state change point on the precipitation forecast curve in preset time range It is continuous to be illustrated by above-mentioned example.Current point in time O (0, v0) rainfall be mapped to the grade interval of precipitation size, example Such as v0=15 mm hrs, corresponding is heavy rain, rainfall state change point A (t1, v1) rainfall be mapped to rainfall size Grade interval, such as v1=17 mm hrs, corresponding is heavy rain, rainfall state change point B (t2, 0) rainfall mapping To precipitation size grade interval it is corresponding be no rain, then the precipitation forecast sentence can be described as " be now heavy rain turn Heavy rain, t1Heavy rain starts to diminish after minute, until t2Rain stops after minute ".The specific descriptions of precipitation forecast sentence are not with the present embodiment It is limited.
It is noted that above-mentioned precipitation forecast sentence can be specifically annual precipitation changes tendency information, corresponding time One kind of information and the various combinations of rain estimation, does not make any limit for specific combination or built-up sequence It is fixed.
Fixed point precipitation forecast method provided in this embodiment, by interpolation method to the geographical location in the time model Precipitation forecast data in enclosing are pre-processed, and obtain precipitation forecast data set of the geographical location in the time range Close, that is, obtained the precipitation forecast data of time precision higher, corresponding precipitation forecast is generated according to precipitation forecast data acquisition system Curve, due to including corresponding time, precipitation in the precipitation state change point according to corresponding precipitation forecast curve acquisition The information such as variation tendency, these information are combined, and generate the precipitation forecast sentence with natural language description, and user can be straight That sees finds out the precipitation state changed specific time in preset time range.Further, by constructing precipitation and drop The mapping relations of water grade, the precipitation in the precipitation forecast sentence is represented using corresponding rain estimation, and user can be with Intuitively find out specific annual precipitation changes trend in preset time range.It is supplied to user's precipitation to open in the form of natural language The description of beginning time, precipitation size variation situation, user intuitively can therefrom obtain desired information.
The fixed point precipitation forecast method provided below by a specific example above-described embodiment is made further specifically It is bright.
Assuming that the precipitation forecast data for obtaining one hour future of user geographic location are:(0,15)、(10,16)、 (20,10)、(30,5)、(40,1)、(50,0)、(60,0)。
Preset time precision is one minute, and precipitation forecast data acquisition system is obtained by interpolation method:[15.00,15.77, 16.36,16.77,17.03,17.14,17.12,16.98,16.74,16.41,16.00,15.53,15.00,14.43, 13.83,13.20,12.55,11.90,11.25,10.61,10.00,9.42,8.86,8.33,7.82,7.32,6.85,6.38, 5.92,5.46,5.00,4.54,4.08,3.63,3.19,2.76,2.35,1.96,1.61,1.29,1.00,0.76,0.55, 0.38,0.25,0.14,0.07,0.02,-0.01,-0.01,0.00,0.03,0.06,0.10,0.13,0.16,0.18,0.18, 0.15,0.09]。
According to the above-mentioned precipitation forecast data acquisition system generation precipitation forecast curve one hour following as shown in figure 4, Fig. 4 is this Invent the precipitation forecast curve synoptic diagram of an embodiment.
Calculating the corresponding first-order difference sequence of precipitation forecast data acquisition system is:[0.77,0.59,0.41,0.26,0.11,- 0.02,-0.14,-0.24,-0.33,-0.41,-0.47,-0.53,-0.57,-0.60,-0.63,-0.65,-0.65,- 0.65,-0.64,-0.61,-0.58,-0.56,-0.53,-0.51,-0.50,-0.47,-0.47,-0.46,-0.46,- 0.46,-0.46,-0.46,-0.45,-0.44,-0.43,-0.41,-0.39,-0.35,-0.32,-0.29,-0.24,- 0.21,-0.17,-0.13,-0.11,-0.07,-0.05,-0.03,0.00,0.01,0.03,0.03,0.04,0.03,0.03, 0.02,0.00,-0.03,-0.06]。
Calculating the corresponding second differnce sequence of precipitation forecast data acquisition system is:[-0.18,-0.18,-0.15,-0.15,- 0.13,-0.12,-0.10,-0.09,-0.08,-0.06,-0.06,-0.04,-0.03,-0.03,-0.02,-0.00,0.00, 0.01,0.03,0.03,0.02,0.03,0.02,0.01,0.03,0.00,0.01,0.00,0.00,0.00,0.00,0.01, 0.01,0.01,0.02,0.02,0.04,0.03,0.03,0.05,0.03,0.04,0.04,0.02,0.04,0.02,0.02, 0.03,0.01,0.02,0.00,0.01,-0.01,0.00,-0.01,-0.02,-0.03,-0.03]。
If first-order difference critical value is 0.1, second differnce critical value is 0.02, obtains first-order difference absolute value and is less than single order Difference critical value, second differnce absolute value are respectively more than the change point of second differnce critical value:(5,17.03)、(45, 0.25)、(46,0.14)、(58,0.18)。
If minimum time interval is 5 minutes, minimum rainfall is at intervals of 1 mm hr, then the precipitation state finally obtained Change point is:(5,17.03)、(45,0.25).
Construct the grade of precipitation size:0-without rain, precipitation it is less than 0.25 mm hr;1-light rain, precipitation exist Between 0.25~1.0 mm hr;2-moderate rain, precipitation is between 1.0~4.0 mm hrs;3-heavy rain, precipitation exist Between 4.0~16.0 mm hrs;4-heavy rain, precipitation are more than 16.0 mm hrs.Then above-mentioned precipitation state change point pair The precipitation grade answered is respectively heavy rain and without rain.
The corresponding precipitation information of current point in time is (0,15.00), and corresponding precipitation grade is heavy rain.Judge successively Go out the annual precipitation changes trend in current point in time and precipitation state change point between adjacent 2 points and turn heavy rain, heavy rain change for heavy rain It is small, until rain stops.
The precipitation forecast sentence ultimately generated can so describe " to be that heavy rain turns heavy rain now, heavy rain starts to become after five minutes Small, rain stops after 45 minutes ".
It is appreciated that in the unshowned embodiment of the present invention, when the ambient condition of acquisition is temperature forecast data, air When Quality Forecasting data, wind direction and wind speed forecasting data, its processing procedure is similar with precipitation forecast data handling procedure.
Fig. 5 is the fixed-point environment state forecast method flow diagram that further embodiment of this invention provides.As shown in figure 5, this reality Applying the fixed-point environment state forecast method of example offer includes:
Step 21, the geographical location information of user is obtained;
Specifically, it may be referred to above-mentioned implementation by way of the geographical location information that location client terminal obtains user Example, details are not described herein.
Step 22, the ambient condition for obtaining the geographical location predeterminable area quantifies value matrix, and the ambient condition quantifies Value matrix is corresponding with the ambient condition quantized value of each subregion in the predeterminable area;
Specifically, fixed-point environment state forecast device can obtain the geographical location by accessing the modes such as internet The ambient condition forecast data of predeterminable area, then carries out quantification treatment, so as to obtain environment shape to ambient condition forecast data State quantifies value matrix.Wherein, ambient condition quantized value can be specifically fine particle content in precipitation, temperature, air
Step 23, user subregion residing in the predeterminable area is determined, and the user is in the ring Border state quantifies corresponding point in value matrix;
Step 24, subregion of the environment quantity of state value more than zero in the predeterminable area is determined;
Step 25, determine that environment quantity of state value is more than residing for zero subregion and the user in the predeterminable area Position relation between subregion;
Step 26, by the ambient condition of subregion of the environment quantity of state value in the predeterminable area more than zero and preset areas In domain environment quantity of state value more than zero subregion and the user residing for subregion between position relation, be combined as ring Border state forecast sentence;
Step 27, ambient condition forecast sentence is pushed to the user.
Specifically, by ambient condition forecast sentence send to the client terminal of user, client terminal display interface into Row display, can also send word message to user, can also be forecast the ambient condition of generation by way of voice broadcast Sentence is reported to user, can also carry out language while the display interface of client terminal shows the ambient condition forecast sentence Sound is reported, and the present embodiment is not limited in any way this.
Ambient condition forecasting procedure provided in this embodiment, ultimately generates in the range of the predeterminable area with natural language description Ambient condition forecast sentence, by user push can be straight with the ambient condition forecast information of natural language description, user That sees finds out the specific location for the ambient condition distribution that user is concerned about in the range of predeterminable area.Improve forecast accuracy and The readability of description, user intuitively can therefrom obtain desired information.
The present invention is specifically further described exemplified by pinpointing precipitation forecast method.These embodiments be for illustrating, And not it is used for limiting the present invention.
Fig. 6 is the fixed point precipitation forecast method flow chart that further embodiment of this invention provides.As shown in fig. 6, the present embodiment The fixed point precipitation forecast method of offer includes:
Step 31, the geographical location information of user is obtained.
Step 32, the precipitation moment matrix of the geographical location predeterminable area is obtained;
Specifically, fixed point precipitation forecast device can be obtained in the geographical location predeterminable area by accessing internet Precipitation forecast data, for example, pre- by accessing the weather forecast API of Google, the weather forecast API of meteorological observatory and other weather Report interface obtains weather data, and certainly, the mode that the present embodiment obtains precipitation forecast data is not limited thereto.By predeterminable area The identical subregion of multiple sizes is divided into, the size of subregion can be preset.According to the geographical location predeterminable area Interior precipitation forecast data correspond to the precipitation of each sub-regions, generate the precipitation moment matrix of predeterminable area, wherein, the drop Water matrix is corresponding with the precipitation of each subregion in the predeterminable area.Pinpointing precipitation forecast device can also be by existing Precipitation moment matrix described in technical limit spacing.
Wherein, above-mentioned predeterminable area includes user geographic location, it is preferred that can determine user according to Administration partition Province, city residing for geographic location, district, then select province, city, district one of which to be arranged to predeterminable area.
Step 33, user subregion residing in the predeterminable area is determined, and the user is in the drop Corresponding point in water matrix.
Specifically, can according to the corresponding longitude and latitude of the corresponding longitude and latitude in predeterminable area edge and user position come User subregion residing in the predeterminable area is determined, in order to more clearly describe the step, it is assumed that get use The corresponding longitude and latitude in family position is [x1, y1], the corresponding longitude and latitude in predeterminable area edge is [x2, x3]×[y2, y3], obtain The size of the precipitation matrix A of predeterminable area is m × n, then user position corresponding point in the precipitation moment matrix OijCoordinate can be expressed as:
Find out the user corresponding point in the precipitation moment matrix, it is possible to preset with described according to precipitation moment matrix The correspondence of each subregion determines user subregion residing in the predeterminable area in region.
Step 34, subregion of the precipitation more than zero in the predeterminable area is determined.
A kind of preferable mode, the point that zero can be more than by finding out corresponding precipitation in the precipitation moment matrix, then Determine that precipitation is big in the predeterminable area according to the correspondence of precipitation moment matrix and each subregion in the predeterminable area In zero subregion.
Step 35, determine the subregion of precipitation in the predeterminable area more than zero and subregion residing for the user it Between position relation.
Wherein, the position relation can be specifically this eight kinds of orientation of east, south, west, north, the southeast, southwest, northeast and northwest Relation.Specifically, can centered on the subregion where user point, predeterminable area is divided into due east, due west, due south, just North, the southeast, southwest, northeast and the quadrant of northwest eight, according to the quadrant residing for subregion of the precipitation more than zero come determine described in In predeterminable area precipitation more than zero subregion and the user residing for subregion between position relation.
Step 36, by precipitation in the precipitation of subregion of the precipitation in the predeterminable area more than zero and predeterminable area The position relation between the subregion residing for subregion and the user more than zero, is combined as precipitation forecast sentence.
Specifically, precipitation forecast sentence gang form can be set to combine the precipitation information and position relation letter Breath.Precipitation forecast sentence gang form, can be arranged to by a kind of preferred embodiment:" you+position relation information+precipitation Measure information ".It is understood that when in multiple orientation at the same time there are precipitation be more than zero subregion when, orientation can be closed System combines, can also be described separately.For example, in predeterminable area, the southeast of the subregion residing for user and direction northwest All there are the subregion that precipitation is more than zero, the precipitation forecast sentence can be described as " your the southeast and direction northwest rainy ", It can also be described as " your southeastern direction is rainy, your direction northwest is rainy ".The specific descriptions of precipitation forecast sentence are not with this implementation Example is limited.
Optionally, when subregion of the precipitation more than zero is not present in predeterminable area, fixed precipitation forecast language is generated Sentence, for example, can be " not having precipitation around you ".Certainly, the specific descriptions of precipitation forecast sentence are not limited with the present embodiment.
Step 37, the precipitation forecast sentence is pushed to the user.
Specifically, specific push mode can be selected according to the difference of precipitation forecast sentence.For example, in predeterminable area In the case of middle no precipitation, precipitation forecast sentence is shown in the display interface of client terminal;There are the feelings of precipitation in predeterminable area Under condition, precipitation forecast sentence is shown in the display interface of client terminal, while precipitation forecast sentence is reported to user.
Furthermore it is also possible to according to the precipitation moment matrix of the predeterminable area, the rainfall distribution in the predeterminable area is generated Figure, and according to the geographical location information of user, user location in the rainfall distribution figure is marked out, by the rainfall distribution Figure is sent to the client terminal of user, is shown in the display interface of client terminal, so as to for reference.
Fixed point precipitation forecast method provided in this embodiment, ultimately generates in the range of the predeterminable area with natural language description Precipitation forecast sentence, can intuitively be found out with the precipitation forecast information of natural language description, user by being pushed to user The specific location of rainfall distribution in the range of predeterminable area.Improve the accuracy of forecast and the readability of description, user can be with Intuitively therefrom obtain desired information.
Optionally, fixed point precipitation forecast method provided in this embodiment is on the basis of embodiment illustrated in fig. 6, step 35, Determine the position relation between the subregion of precipitation in the predeterminable area more than zero and subregion residing for the user, tool Body may include steps of:
Calculate between the subregion of precipitation in the predeterminable area more than zero and subregion residing for the user away from From;
Determine in the predeterminable area in subregion of the precipitation more than zero, the subregion nearest apart from the user and institute State the position relation between the subregion residing for user.
According to step 34, subregion of the precipitation more than zero in the predeterminable area is determined, when precipitation in predeterminable area During subregion more than one more than zero, it is preferred that by between the subregion residing for the subregion nearest apart from user and user Position relation and its precipitation information prediction to user.
Specifically, can be according to the precipitation moment matrix and the correspondence of the precipitation of each subregion of predeterminable area, meter Calculate subregion of the precipitation more than zero in precipitation moment matrix corresponding point and user in precipitation moment matrix between corresponding point Euclidean distance, by relatively determining the subregion nearest apart from the user corresponding point in precipitation moment matrix, so that it is determined that away from The subregion nearest from the user.Judge that the orientation between the subregion nearest apart from user and subregion residing for user is closed The detailed process of system is identical with embodiment illustrated in fig. 4, and details are not described herein again.
Further, can also be by the distance between the subregion residing for the subregion nearest apart from user and user information Also combine and offer user in advance in precipitation forecast sentence.
Further, fixed point precipitation forecast method provided in this embodiment is on the basis of embodiment illustrated in fig. 4, step 35, determine that the orientation between the subregion of precipitation in the predeterminable area more than zero and subregion residing for the user is closed System, can also specifically include the following steps:
Determine point of the precipitation more than zero in the precipitation moment matrix;
Determine the line structure of point in the precipitation moment matrix with the user corresponding point of the precipitation more than zero Into primary vector;
Subregion of the precipitation more than zero and described is determined in the predeterminable area according to quadrant where the primary vector The position relation between subregion residing for user.
Specifically, can schematically it be illustrated by following example.Assuming that precipitation is more than in precipitation moment matrix Zero point is P (a, b), it will be understood that point P is located at a rows in precipitation moment matrix, b row.Assuming that user position is described Corresponding point O (i, j) in precipitation moment matrix, the i-th row in precipitation moment matrix, jth arrange, then the line of point P and point O is formed Primary vector can be expressed asThe quadrant according to where primary vector determines precipitation in the predeterminable area Measure the position relation between the subregion residing for subregion and the user more than zero.Wherein transverse axis positive direction represents due east, Transverse axis negative direction represents due west, and longitudinal axis positive direction represents due north, and longitudinal axis negative direction represents due south, the section between due east and due north Represent northeastward, the section between due east and due south represents southeastern direction, and the section between due west and due north represents northwest To the section between due west and due south represents southwestward.
Further, fixed point precipitation forecast method provided in this embodiment further includes on the basis of embodiment illustrated in fig. 6 Following steps:
Obtain the wind direction field matrix of the geographical location predeterminable area.
In the present embodiment, the method that wind direction field matrix can also be identical by obtaining precipitation moment matrix, according to preset areas The data of weather forecast in domain, extracts the wind direction and wind speed information of the predeterminable area, further according in wind direction field matrix and predeterminable area The correspondence of each subregion, generates wind direction field matrix, then the wind of the wind direction field matrix and each subregion in predeterminable area To and wind speed correspond to.Such as obtain wind direction field matrix and be expressed as B (i, j, k)=wind_speed, wherein i, j represents that subregion exists Corresponding coordinate in wind direction field matrix, the value of k represent east-west direction for 0 or 1, k=0, and k=1 represents North and South direction.Wind direction field Unit is meter per second.Fixed point precipitation forecast device can also obtain the wind direction field matrix by the prior art.It is appreciated that wind Point into field matrix and the point in precipitation moment matrix are one-to-one.
Correspondingly, can also determine precipitation in the predeterminable area be more than zero and wind direction towards the user sub-district Domain;Determine son of the precipitation more than zero and residing for wind direction towards the subregion of the user and the user in the predeterminable area Position relation between region;By precipitation in the predeterminable area be more than zero and wind direction towards the subregion of the user drop Sub-district of the precipitation more than zero and residing for wind direction towards the subregion of the user and the user in water, the predeterminable area Position relation between domain, is combined as the precipitation forecast sentence, and precipitation forecast sentence can for example be described as that " you have northwest Rain is approaching ", then it is pushed to user.The specific descriptions of precipitation forecast sentence are not limited with the present embodiment.
Specifically, it can determine that precipitation is more than described in zero and wind direction direction in the predeterminable area by following steps The subregion of user.
Precipitation is more than zero point in the precipitation moment matrix;
Determine the line structure of point in the precipitation moment matrix with the user corresponding point of the precipitation more than zero Into primary vector, and point of the precipitation more than zero corresponding wind direction and wind speed in the wind direction field matrix form Secondary vector;
Determine that primary vector subregion corresponding more than zero point with the inner product of secondary vector is to be dropped in the predeterminable area Water be more than zero and wind direction towards the user subregion.
Determine that primary vector subregion corresponding more than zero point with the inner product of secondary vector is to be dropped in the predeterminable area Water be more than zero and wind direction towards the user subregion.
Wherein it is determined that the company of point in the precipitation moment matrix with the user corresponding point of the precipitation more than zero The embodiment for the primary vector that line is formed may refer to above-described embodiment, and details are not described herein again.
In the present embodiment, by point of the precipitation more than zero, corresponding wind direction and wind speed are formed in the wind direction field matrix Secondary vector, can be illustrated by an example here.Such as in precipitation moment matrix precipitation more than zero point P described Corresponding wind direction and wind speed are in wind direction field matrix, are 10 meter per seconds from the wind speed in east orientation west, from the wind speed in south orientation north for 5 meters/ Second, then by point of the precipitation more than zero secondary vector that corresponding wind direction and wind speed are formed in the wind direction field matrix, i.e. gas Stream motion vector can be expressed as
If by the angle between primary vector obtained above and secondary vector between [- 90,90], it is determined that Subregion corresponding to the corresponding point of secondary vector be in predeterminable area precipitation be more than zero and wind direction towards the user son Region.In the present embodiment, can be described by the method for mathematics, the angle between the primary vector and secondary vector Between [- 90,90], whether can be judged by the inner product of primary vector and secondary vector more than zero.
Further, in the present embodiment, by precipitation in the predeterminable area be more than zero and wind direction towards the user The precipitation of subregion, precipitation is more than zero and subregion and the use of the wind direction towards the user in the predeterminable area The position relation between subregion residing for family, is combined as before the precipitation forecast sentence, can also comprise the following steps:
Calculate precipitation in the predeterminable area and be more than zero and subregion and user institute of the wind direction towards the user The distance between the subregion at place.
Correspondingly, by precipitation in the predeterminable area be more than zero and wind direction towards the subregion of the user precipitation Subregion of the precipitation more than zero and residing for wind direction towards the subregion of the user and the user in amount, the predeterminable area Between position relation, precipitation is more than zero and subregion and the user of the wind direction towards the user in the predeterminable area The distance between residing subregion, is combined as the precipitation forecast sentence, and the precipitation forecast sentence of generation can for example describe For " you are approaching in northwest s kilometers of rain ", user is then pushed to.The specific descriptions of precipitation forecast sentence are not with this reality Example is applied to be limited.
Specifically, precipitation can be calculated according to the correspondence of each subregion in precipitation moment matrix and predeterminable area Milimeter number corresponding to matrix unit length.Assuming that the corresponding longitude and latitude in predeterminable area edge is [x2, x3] × [y2, y3], obtain The size for taking the precipitation matrix A of predeterminable area is m × n, then the milimeter number corresponding to precipitation matrix unit length is:
Wherein CearthIt is earth girth.
Then calculate in precipitation moment matrix precipitation be more than zero and wind direction towards the user the corresponding point of subregion Euclidean distance r between point corresponding with subregion where user.Then in predeterminable area precipitation be more than zero and wind direction towards institute State user subregion and the user residing for the distance between subregion s can be calculated by s=kr.
Optionally, it is also an option that in predeterminable area precipitation be more than zero and wind direction towards the user subregion and its Maximum precipitation is as corresponding precipitation information in precipitation forecast sentence in adjacent subregion.
Further, in the present embodiment, fixed point precipitation forecast method further includes following steps:
Generate precipitation and the mapping relations of rain estimation;Precipitation in the precipitation forecast sentence is used corresponding Rain estimation represents.
In the present embodiment, precipitation and the mapping relations of rain estimation are generated, by the drop in the precipitation forecast sentence Water represents that specific embodiment is with the generation precipitation in present invention with dropping using corresponding rain estimation The mapping relations of water grade, represent similar by the precipitation in the precipitation forecast sentence using corresponding rain estimation, this Place repeats no more.The precipitation forecast sentence of generation can for example be described as " you have heavy rain in northwest ", " you northwest s kilometers have Heavy rain ", " you northwest s kilometers there is heavy rain approaching " etc..That is, above-mentioned precipitation forecast sentence is corresponding orientation One kind of the various combinations of the information such as relation information, corresponding range information and rain estimation, for specific combination Mode or built-up sequence are not limited in any way, and the specific descriptions of precipitation forecast sentence are not also limited with the present embodiment.
Fixed point precipitation forecast method provided in this embodiment, ultimately generates in the range of the predeterminable area with natural language description Precipitation forecast sentence, user not only although it is understood that the distribution orientation of precipitation zone by the precipitation forecast information of description, can be with Recognize the distance between precipitation zone and user, precipitation zone whether close to precipitation grade of user and precipitation zone etc.. Relative to the prior art rainfall, the figure description of the moving direction of zone of rainfall indicated by an arrow are represented with different colors.This The natural language description mode provided is provided, the accuracy of forecast is improved and the readability of description, user can be intuitively Therefrom obtain desired information.
The fixed point precipitation forecast method that embodiment described in Fig. 6 provides is made below by a specific example further detailed Explanation.
Assuming that the geographical location information for obtaining user is E120.25 and N23.25, user geographic location predeterminable area The corresponding longitude and latitude in edge is [E120.0, E120.5] × [N23.0, N23.5].
Assuming that the precipitation matrix A for obtaining user geographic location predeterminable area is:
Assuming that the wind direction field matrix B for obtaining user geographic location predeterminable area is:B (2,9,0)=10, B (2,9,1) =-10, B (3,9,0)=10, B (3,9,1)=10, B (i, j, k)=0, wherein i, j represent remaining all points.
Obviously, the size of precipitation matrix A is 10 × 10, i.e. m=n=10.So user position is in rainfall square Coordinate in battle array and the milimeter number corresponding to rainfall matrix unit length are calculated by formula:
It is, coordinate of the user in precipitation moment matrix is (5,5), the kilometer corresponding to rainfall matrix unit length Number is 5.69 kilometers.
Determine the corresponding point of subregion of rainfall in precipitation moment matrix more than zero have (2,9), (3,9), (4,9), (3, 8)、(4,8)。
Determine precipitation in the predeterminable area be more than zero and wind direction towards the user subregion.First, drop is found out The corresponding point of subregion that wind speed is not zero in subregion of the rainfall more than zero is (2,9), (3,9).
Specifically, the corresponding customer location line vector of point (2,9), i.e., primary vector is (3, -4), and point (2,9) is corresponding The air motion vector of subregion, i.e., secondary vector is (10, -10).By calculating the corresponding primary vector of point (2,9) and second The inner product of vector is 70, it is thus determined that the corresponding subregion of point (2,9) is that precipitation is more than zero and wind direction direction in predeterminable area The subregion of the user.
Specifically, the corresponding customer location line vector of point (3,9), i.e., primary vector is (2, -4), and point (3,9) is corresponding The air motion vector of subregion, i.e., secondary vector can be expressed as (10,10).By calculating point (3,9) corresponding first The inner product of vector sum secondary vector is -20, it is thus determined that the corresponding subregion of point (3,9) is not that precipitation is more than in predeterminable area Zero and wind direction towards the user subregion.
It is possible thereby to determine that the corresponding subregion of point (2,9) is that precipitation is more than described in zero and wind direction direction in predeterminable area The subregion of user.
Point (2,9) and the Euclidean distance r=5 of customer location corresponding points in precipitation moment matrix are calculated, according to formula s=kr Subregion of the precipitation more than zero and residing for wind direction towards the subregion of the user and the user in predeterminable area can be calculated The distance between be about 28 kilometers.
The corresponding customer location line vector of point (2,9), i.e., primary vector is (3, -4), it is seen that where its primary vector Region of the quadrant between due west and due north, judges the position relation of the corresponding subregion of point (2,9) and subregion where user For northwest.
Maximum precipitation is 16 mm hrs in the corresponding subregion of point (2,9) and its adjacent subregion, corresponding drop Water grade is heavy rain.
The precipitation forecast sentence ultimately generated can be described as " you have heavy rain approaching in 28 kilometers of northwest ".
It is appreciated that in the unshowned embodiment of the present invention, when the ambient condition of acquisition quantifies value matrix as temperature, sky In gas during fine particle content, its processing procedure is similar with the processing procedure for obtaining precipitation moment matrix.
Fig. 7 is the fixed-point environment state forecast schematic device that one embodiment of the invention provides.As shown in fig. 7, this implementation The fixed-point environment state forecast device 100 that example provides can realize the fixed-point environment state that embodiment illustrated in fig. 1 of the present invention provides The each step for the fixed point precipitation forecast method that forecasting procedure and embodiment illustrated in fig. 2 provide, details are not described herein again.
Fixed-point environment state forecast device 100 provided in this embodiment specifically includes, acquisition module 101, processing module 102 With sending module 103.Acquisition module 101 is used to obtain the geographical location information of user and the geographical location preset time range Interior ambient condition forecast data.Processing module 102 is used to generate the geographical location according to the ambient condition forecast data Ambient condition prediction curve in the time range, obtains the environmental condition change on the ambient condition prediction curve Point, the ambient condition generated according to the environmental condition change point in the preset time range forecast sentence.Sending module 103 For ambient condition forecast sentence to be pushed to the user.
Fixed-point environment state forecast device provided in this embodiment, the geographical location information of user is obtained by acquisition module With the ambient condition forecast data in the geographical location preset time range so that processing module is pre- according to the ambient condition Count off obtains the ambient condition forecast according to ambient condition prediction curve of the geographical location in the time range is generated Environmental condition change point on curve, the ambient condition in the preset time range is generated according to the environmental condition change point Forecast sentence, then ambient condition forecast sentence is pushed to by user by sending module.Due to fixed-point environment state forecast Include corresponding time, environment in the environmental condition change point that device can be obtained according to corresponding ambient condition prediction curve The information such as state variation tendency, these information are combined, and are generated and are forecast sentence with the ambient condition of natural language description, are used Family can intuitively find out the ambient condition changed specific time in preset time range, to compare intuitive way offer The information wanted to user.
Wherein, the ambient condition forecast data that the acquisition module 101 obtains includes:Precipitation forecast data, temperature forecast Data, prediction of air quality data, wind direction and wind speed forecasting data.
Fig. 8 is the fixed-point environment state forecast schematic device that further embodiment of this invention provides.As shown in figure 8, this reality The fixed-point environment state forecast device 100 of example offer is applied on the basis of embodiment illustrated in fig. 7, fixed-point environment state forecast device 100 can also set receiving module 104, and the ambient condition report request that receiving module 104 is used to receive user's transmission disappears Breath.By setting receiving module to receive the ambient condition report request message that user sends, user can obtain institute whenever and wherever possible Locate geographical location ambient condition forecast information, user can also sets itself preset time range, be more convenient user use.
In practical applications, processing module 102 is specifically used for the ambient condition forecast data passing through linear interpolation side Method generates ambient condition forecast data set of the geographical location in the time range, wherein, the ambient condition is pre- Count off is preset value according to temporal precision is integrated into;The ambient condition is generated according to the ambient condition forecast data set Prediction curve.
In practical applications, processing module 102 specifically is additionally operable to inquire about in the ambient condition forecast data set, environment The first-order difference absolute value of state quantized value is less than first-order difference critical value, second differnce absolute value is more than second differnce critical value Change point, by the change point, with the time interval of previous change point be more than preset time threshold, with previous change The change point that the ambient condition quantized value interval of point is more than default ambient condition quantized value threshold value is arranged to the ambient condition change Change point.
In practical applications, processing module 102 is specific is additionally operable to work as on the ambient condition prediction curve without ambient condition During change point, the preset time range and current ambient conditions are combined as ambient condition forecast sentence.When the environment shape There are during environmental condition change point on state prediction curve, then phase in current point in time and environmental condition change point is judged successively Environmental condition change trend between adjacent 2 points, will be adjacent between 2 points in current point in time and environmental condition change point Environmental condition change trend and environmental condition change point corresponding time are combined as ambient condition forecast sentence successively.
Further, processing module 102 can be also used for the mapping of build environment state quantized value and ambient condition grade The ambient condition, is forecast that the ambient condition in sentence is represented using corresponding ambient condition grade by relation.
Fixed-point environment state forecast device provided in this embodiment, by processing module to the geographical location when described Between in the range of ambient condition forecast data pre-processed, obtain environment shape of the geographical location in the time range State forecast data set, that is, obtained the ambient condition forecast data of time precision higher, according to ambient condition forecast data collection Symphysis obtains environmental condition change point into corresponding ambient condition prediction curve, according to corresponding ambient condition prediction curve, then The information such as the time included in environmental condition change point and environmental condition change trend are combined, generates and is retouched with natural language The ambient condition forecast sentence stated, while the mapping relations of processing module also build environment state and ambient condition grade, by institute The ambient condition stated in ambient condition forecast sentence is represented using corresponding ambient condition grade, is provided finally by sending module Ambient condition to user forecasts sentence, when can intuitively show that ambient condition is changed specific in preset time range Between and/or specific trend, there is provided the information wanted to user.
Fig. 9 is the fixed-point environment state forecast schematic device that yet another embodiment of the invention provides.As shown in figure 9, this reality The fixed-point environment shape that embodiment illustrated in fig. 5 of the present invention provides can be realized by applying the fixed-point environment state forecast device 200 of example offer The each step for the fixed point precipitation forecast method that state forecasting procedure and embodiment illustrated in fig. 6 provide, details are not described herein again.
Fixed-point environment state forecast device 200 provided in this embodiment specifically includes, acquisition module 201, processing module 202 With sending module 203.Acquisition module 201 is used to obtain the geographical location information of user and the ring of the geographical location predeterminable area Border state quantifies value matrix, and the ambient condition quantifies the ambient condition amount of value matrix and each subregion in the predeterminable area Change value corresponds to.Processing module 202 is used for the subregion for determining that the user is residing in the predeterminable area, and the user The corresponding point in the ambient condition quantifies value matrix;Determine son of the environment quantity of state value more than zero in the predeterminable area Region;Determine between the subregion of environment quantity of state value in the predeterminable area more than zero and subregion residing for the user Position relation;By in the ambient condition and predeterminable area of subregion of the environment quantity of state value in the predeterminable area more than zero Ambient condition quantized value more than zero subregion and the user residing for subregion between position relation, be combined as environment shape State forecasts sentence.Sending module 203 is used to ambient condition forecast sentence being pushed to the user.
Optionally, processing module 202 is additionally operable to calculate the sub-district that environment quantity of state value in the predeterminable area is more than zero The distance between domain and the subregion residing for the user, environment quantity of state in the predeterminable area is determined according to result of calculation In subregion of the value more than zero, the orientation between the subregion nearest apart from the user and subregion residing for the user is closed System.Further, processing module 202 can also by between the subregion residing for the subregion nearest apart from user and user away from Also combined from information and forecast to offer user in advance in sentence in ambient condition.
Wherein, the ambient condition that acquisition module 201 obtains, which quantifies value matrix, to be included:Precipitation moment matrix, temperature matrices, air Middle fine particle contains moment matrix.
Fixed-point environment state forecast device provided in this embodiment, the geographical location information of user is obtained by acquisition module Quantify value matrix with the ambient condition of the geographical location predeterminable area, processing module quantifies value matrix according to ambient condition and obtains Subregion of the environment quantity of state more than zero and its position relation between the subregion residing for user in predeterminable area, by described in Environment quantity of state value is big in the ambient condition and predeterminable area of subregion of the environment quantity of state value more than zero in predeterminable area Position relation between the subregion residing for zero subregion and the user is combined into the preset areas with natural language description Ambient condition forecast sentence in the range of domain, is pushed to user by sending module and is forecast with the ambient condition of natural language description Information, there is provided give user's intuitively ambient condition distribution situation in the range of predeterminable area, user, which intuitively can therefrom obtain, to be thought The information wanted.
Fixed-point environment state forecast device 200 provided in this embodiment is on the basis of embodiment illustrated in fig. 9, processing module 202 are specifically used for determining that the ambient condition quantifies the point that value matrix middle ring border state quantized value is more than zero;Determine the environment Point of the state quantized value more than zero quantifies the line composition of point corresponding with the user in value matrix in the ambient condition Primary vector;The quadrant according to where the primary vector determines sub-district of the environment quantity of state value more than zero in the predeterminable area Position relation between domain and subregion residing for the user.
In practical applications, acquisition module 201 is additionally operable to, and obtains the wind direction field matrix of the geographical location predeterminable area, The wind direction field matrix is corresponding with the wind direction and wind speed of each subregion in the predeterminable area.
Correspondingly, processing module 202 is additionally operable to, determine that environment quantity of state value is more than zero and wind direction in the predeterminable area Towards the subregion of the user;Determine in the predeterminable area environment quantity of state value be more than zero and wind direction towards the user Subregion and the user residing for subregion between position relation;Environment quantity of state value in the predeterminable area is big In zero and wind direction towards environment quantity of state value in the ambient condition, the predeterminable area of the subregion of the user be more than zero and The position relation between subregion residing for wind direction towards the subregion of the user and the user, is combined as the environment shape State forecasts sentence.
In practical applications, processing module 202 is specifically additionally operable to, and determines that the ambient condition quantifies value matrix middle ring border shape State quantized value is more than zero point;Determine the ambient condition amount more than zero point the ambient condition quantify value matrix in institute The primary vector that the line of the corresponding point of user is formed, and point of the ambient condition quantized value more than zero are stated in the wind direction The secondary vector that corresponding wind direction and wind speed are formed in field matrix;Determine point of the inner product more than zero of primary vector and secondary vector Corresponding subregion be the predeterminable area in environment quantity of state value be more than zero and wind direction towards the user subregion.
Further, processing module 202 is additionally operable to, and is calculated environment quantity of state value in the predeterminable area and is more than zero and wind To the distance between subregion residing for the subregion towards the user and the user.Correspondingly, processing module 202 is also used In, by environment quantity of state value in the predeterminable area be more than zero and wind direction towards the subregion of the user ambient condition, Environment quantity of state value is more than residing for zero and wind direction towards the subregion of the user and the user in the predeterminable area In position relation, the predeterminable area between subregion environment quantity of state value be more than zero and wind direction towards the user son The distance between region and the subregion residing for the user, are combined as the ambient condition forecast sentence.
Further, processing module 202 is additionally operable to the mapping relations of build environment state quantized value and ambient condition grade, The ambient condition being forecast to, the ambient condition in sentence is represented using corresponding ambient condition grade.It is provided in this embodiment fixed Point ambient condition predictor, the geographical location information of user and the geographical location predeterminable area are obtained by acquisition module Ambient condition quantifies value matrix and wind direction field matrix, and processing module quantifies value matrix according to ambient condition and wind direction field matrix obtains Subregion of the environment quantity of state value more than zero and its position relation between the subregion residing for user into predeterminable area Information, range information, and judge that subregion of the environment quantity of state value more than zero, will whether close to user in predeterminable area The ambient condition of subregion of the environment quantity of state value more than zero in predeterminable area, and environment quantity of state value is big in predeterminable area Position relation information, range information between the subregion residing for zero subregion and the user and whether connect to user The information such as near, the ambient condition forecast sentence being combined into the range of the predeterminable area with natural language description, passes through sending module Pushed to user with the ambient condition forecast information of natural language description, there is provided give user intuitively user in the range of predeterminable area The distribution orientation of the ambient condition of care, the environment shape that the distance between the ambient condition of user's care and user, user are concerned about State whether the information such as the ambient condition grade of ambient condition being concerned about close to user and user, user can intuitively from It is middle to obtain desired information.
One of ordinary skill in the art will appreciate that:Realizing all or part of step of above-mentioned each method embodiment can lead to The relevant hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer read/write memory medium.The journey Sequence upon execution, execution the step of including above-mentioned each method embodiment;And foregoing storage medium includes:ROM, RAM, magnetic disc or Person's CD etc. is various can be with the medium of store program codes.
Finally it should be noted that:The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations;To the greatest extent Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that:Its according to Can so modify to the technical solution described in foregoing embodiments, either to which part or all technical characteristic into Row equivalent substitution;And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology The scope of scheme.

Claims (12)

  1. A kind of 1. fixed-point environment state forecast method, it is characterised in that including:
    Obtain the geographical location information of user;
    Obtain the ambient condition forecast data in the geographical location preset time range;
    Ambient condition of the geographical location in the time range is generated according to the ambient condition forecast data and forecasts song Line;
    Obtain the environmental condition change point on the ambient condition prediction curve;
    The ambient condition generated according to the environmental condition change point in the preset time range forecasts sentence;
    Ambient condition forecast sentence is pushed to the user;
    Wherein, the ambient condition generated according to the environmental condition change point in the preset time range forecasts sentence, Including:
    If without environmental condition change point on the ambient condition prediction curve, by the preset time range and current ambient conditions It is combined as the ambient condition forecast sentence;
    If current point in time and the environment are judged successively there are environmental condition change point on the ambient condition prediction curve Environmental condition change trend in state change point between adjacent 2 points, by current point in time and environmental condition change point Environmental condition change trend and environmental condition change point corresponding time between adjacent 2 points are combined as described successively Ambient condition forecasts sentence.
  2. 2. according to the method described in claim 1, it is characterized in that, before the geographical location information for obtaining user, also wrap Include:
    Receive the ambient condition report request message that the user sends.
  3. 3. according to the method described in claim 1, it is characterized in that, the geography is generated according to the ambient condition forecast data Ambient condition prediction curve of the position in the time range, including:
    The ambient condition forecast data is generated into environment of the geographical location in the time range by interpolation method State forecast data acquisition system, it is preset value that the ambient condition forecast data, which is integrated into temporal precision,;
    The ambient condition prediction curve is generated according to the ambient condition forecast data set.
  4. 4. the according to the method described in claim 3, it is characterized in that, environment obtained on the ambient condition prediction curve State change point, including:
    Obtain in the ambient condition forecast data set, the first-order difference absolute value of ambient condition quantized value is less than first-order difference Critical value, second differnce absolute value are more than the change point of second differnce critical value;
    By in the change point, with the time interval of previous change point be more than preset time threshold, with previous change point Ambient condition quantized value interval is more than the change point of default ambient condition quantized value threshold value as the environmental condition change point.
  5. 5. according to Claims 1 to 4 any one of them method, it is characterised in that further include:
    Build environment state quantized value and the mapping relations of ambient condition grade;
    The ambient condition being forecast to, the ambient condition in sentence is represented using corresponding ambient condition grade.
  6. 6. according to the method described in claim 1, it is characterized in that, the ambient condition forecast data includes:Precipitation forecast number According to, temperature forecast data, prediction of air quality data, wind direction and wind speed forecasting data.
  7. A kind of 7. fixed-point environment state forecast device, it is characterised in that including:
    Acquisition module, the ambient condition in geographical location information and the geographical location preset time range for obtaining user Forecast data;
    Processing module, for generating ring of the geographical location in the time range according to the ambient condition forecast data Border state forecast curve, obtains the environmental condition change point on the ambient condition prediction curve, is become according to the ambient condition Change the ambient condition that point is generated in the preset time range and forecast sentence;
    Sending module, for ambient condition forecast sentence to be pushed to the user;
    Wherein, the processing module, if specifically on the ambient condition prediction curve without environmental condition change point, will described in Preset time range is combined as ambient condition forecast sentence with current ambient conditions;If exist on the ambient condition prediction curve Environmental condition change point, then judge the environment shape between adjacent 2 points in current point in time and environmental condition change point successively State variation tendency, by the environmental condition change trend between in current point in time and environmental condition change point adjacent 2 points with And the environmental condition change point corresponding time is combined as ambient condition forecast sentence successively.
  8. 8. device according to claim 7, it is characterised in that further include:
    Receiving module, the ambient condition report request message sent for receiving the user.
  9. 9. device according to claim 7, it is characterised in that the processing module, specifically for by the ambient condition Forecast data generates ambient condition forecast data collection of the geographical location in the time range by linear interpolation method Close, it is preset value that the ambient condition forecast data, which is integrated into temporal precision,;According to the ambient condition forecast data collection Symphysis is into the ambient condition prediction curve.
  10. 10. device according to claim 9, it is characterised in that the processing module, specifically for inquiring about the environment shape In state forecast data set, the first-order difference absolute value of ambient condition quantized value is exhausted less than first-order difference critical value, second differnce To being worth the change point more than second differnce critical value;By in the change point, it is more than with the time interval of previous change point pre- If the ambient condition quantized value interval of time threshold and previous change point is more than the change of default ambient condition quantized value threshold value Point is arranged to the environmental condition change point.
  11. 11. according to claim 7~10 any one of them device, it is characterised in that the processing module, is additionally operable to generation ring The ambient condition, is forecast the ambient condition use pair in sentence by border state quantized value and the mapping relations of ambient condition grade The ambient condition grade answered represents.
  12. 12. device according to claim 7, it is characterised in that the ambient condition forecast data that the acquisition module obtains Including:Precipitation forecast data, temperature forecast data, prediction of air quality data, wind direction and wind speed forecasting data.
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