CN102184470A - Method and device for processing selected information of sample points in land price survey - Google Patents

Method and device for processing selected information of sample points in land price survey Download PDF

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Publication number
CN102184470A
CN102184470A CN2011101092666A CN201110109266A CN102184470A CN 102184470 A CN102184470 A CN 102184470A CN 2011101092666 A CN2011101092666 A CN 2011101092666A CN 201110109266 A CN201110109266 A CN 201110109266A CN 102184470 A CN102184470 A CN 102184470A
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China
Prior art keywords
sample
sample point
land price
level
soil
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CN2011101092666A
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Chinese (zh)
Inventor
周玉斌
廖贵宾
江毅
王文璞
蒋超亮
张家键
王阳
闫寒
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Shanghai Tongji Urban Planning & Design Institute
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SHANGHAI TONGCHENG INFORMATION TECHNOLOGY Co Ltd
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Priority to CN2011101092666A priority Critical patent/CN102184470A/en
Publication of CN102184470A publication Critical patent/CN102184470A/en
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Abstract

The invention relates to a method and a device for processing selected information of sample points in a land price survey. The method includes the steps: 1) base map information of a region to be surveyed is input from a client side; 2) the client side or a portable terminal sends the information of set probability precision to a land price survey server platform; 3) the land price survey server platform calculates the quantity of sample points and the information of a recommended position by adopting a sample point selecting method in the land price survey; 4) the client side or the portable terminal obtains the quantity of the sample points and the information of the recommended position; 5) the sample points are selected through the client side or the portable terminal; and 6) a database server updates and stores the quantity of the selected sample points and the information of the position of the land price survey server platform in real time; and the like. The device comprises the land price survey server platform, a database server, the client side and the portable terminal. Compared with the prior art, the method and the device have the advantages of saving sample survey expenditure and survey time and the like.

Description

The land price investigation sample clicks win the confidence breath disposal route and device
Technical field
The present invention relates to a kind of land price investigation and Land Price Dynamic Monitoring correlation technique, especially relate to a kind of land price investigation sample and click win the confidence breath disposal route and device.
Background technology
Land valuation is by to natural, the economy that influences land quality with social property is obtained, comprehensive analysis processing, evaluates land quality.It is an important technical of investigating thoroughly land resource quality, quantity and space distribution resources, is the important foundation of Land Resources Management, land use planning, regional planning, city planning.Wherein, estimating the sample point sampling is the key link of land valuation, has directly influenced land valuation result's rationality and precision.Traditional spatial sampling method mainly contains simple random sampling, systematic sampling, stratified random sampling, cluster sampling, dual sampling etc.These method of samplings are used in fields such as soil quality is monitored, the arable land forest land area is monitored, pollute control, mineral resources are reconnoitred more, but in the land valuation field, the research of the quantification sample point method of sampling is less relatively, mainly be based on the method for qualitative reasoning, in the flex point of the key element that influences land quality, set up the evaluation sample point as key factors such as road junction point.
There is following several respects problem in existing land price sample point sampling:
1, when the land price sample point exists situation pockety, should how to handle according to comparatively rare zone for sample points;
2, the traditional sampling method is huge for obtaining reasonable effect collection sample point quantity, needs a large amount of manpower and materials and time;
3, the precision control to the land price sample point lacks research, and the sample precision all is that calculate sample information statistics back.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of land price investigation sample to click win the confidence breath disposal route and device for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of land price investigation sample clicks the breath disposal route of winning the confidence, and it is characterized in that, may further comprise the steps:
1) the base map information of importing from client of wanting the survey area;
2) client or portable terminal device send to land price investigation server platform with the probability precision information of setting;
3) land price investigation server platform adopts land price investigation sample point choosing method to calculate sample point quantity and recommended location information;
4) client or portable terminal device obtain sample point quantity and recommended location information;
5) by client or the selected sample point of portable terminal device;
6) database server real-time update and storage land price investigation server platform are about the quantity and the positional information of selected sample point;
Employing land price investigation sample point choosing method in the described step 3) calculates sample point quantity and the position may further comprise the steps:
31) carry out the sample point quantitative configuration in the suitable deciding grade and level zone that grades;
32) carrying out sample point in the deciding grade and level zone that grades chooses.
Described 31) carrying out the sample point quantitative configuration in the suitable deciding grade and level zone that grades may further comprise the steps:
311) soil grade the deciding grade and level refinement
With the soil grade the deciding grade and level further granular level; The every rank in downtown area is not more than 5 hectares, is not more than 1 square kilometre in the main city, and total number of levels can not be less than 20;
312) determine cost function
C＝C 0+n maxC 1
In the formula, C represents total investigation cost, C 0The necessary basic expense of investigation, C are carried out in expression 1Needed expense of sample point of expression investigation, at C one regularly, as can be known It is the upper limit of sample size;
313) for the precision of the given ratio estimate P of sampling design, calculate the required minimum capacity of sample;
314) by ground, the center logos of sample point quantitative configuration, go other land area of partition level to set up sample point quantity model by the coverage of sample point, thereby determine the quantity of sample point;
315) check whether need to increase and decrease sample size,, then return step 1) and carry out the sample size increase and decrease as needs.
Described step 313), calculate the required minimum capacity of sample and may further comprise the steps for the precision of the given ratio estimate P of sampling design:
3131) calculate initial sample size
n 1 = P ( 1 - P ) E 2 Z 2 + P ( 1 - P ) N
Wherein, E is acceptable error; Z is the critical value of the degree of confidence of investigation estimated value; N is the population unit's number that can do sample point, and formula can be abbreviated as when very big as if N
n 1 = P ( 1 - P ) Z 2 E 2
3132) size of population is adjusted, N is the population unit's number that can do sample point
n 2 = n 1 N N + n 1
3133) if the sampling design is not simple random sampling, then sample size is adjusted, B is the design effect, and design effect explanation simple random sampling is the standard of weighing other complex sampling technique effects, usually adopt empirical method or historical data method to estimate, represent with B during calculating; When sampling is designed to simple random sampling, B=1; When sampling is designed to stratified sampling, B＜1; When sampling is designed to chester sampling, B＞1;
n 3＝Bn 2
3134) adjust the situation that there is the sample survey failure inevitably in sample survey, therefore, in factual survey, must adjust above-mentioned sample size;
Adjust the preceding sample size of back sample size=adjustment/effective sample survey rate
Estimate during calculating that effective sample survey rate represents that with r then final sample size is
n min = n 3 r .
Described step 314) the sample point quantity model of setting up in may further comprise the steps:
3141) the land price form of expression of commerce, industry and dwelling house three class lands used is respectively: route valency, rank valency and district's sheet valency, and the carrier of district's sheet valency or rank valency is planar, its sample point quantity model is:
n i = s i π r i 2
In the formula: n iIt is other sample points amount of i soil level; s iIt is i soil rank area; r iIt is the radius of action of i level sample point;
3142) the route valency is by particular street, use value are equated that front the established standards degree of depth is asked for the average unit price in several soils on this degree of depth, and is attached on the particular street, promptly obtains the route valency in this street, and the route valency is a wire; Therefore, the sample point quantity model of route valency is:
n i = l i 2 r i
In the formula: n iIt is other sample points amount of i soil level; l iIt is i soil rank link length; r iIt is the radius of action of i level sample point.
Described step 32) carrying out sample point in the zone in the deciding grade and level that grades chooses and may further comprise the steps:
321) the sign score value is selected
It is exactly the process of determining the sign score value that the sign score value is selected, when the urban land was divided, all there had been definite score value each unit, and sign score value selection technology adopts median method, as the grade sign score value in deciding grade and level zone of this rank, use following formula measuring and calculating with the intermediate value in the deciding grade and level zone of respectively grading:
T i = T i max - T i min 2
In the formula, T iThe sign score value of representing i rank soil, T ImaxBe the highest unit score value in i rank soil, T IminAs represent the lowest element score value in i level soil, for the formed soil " piece " that distributes in flakes, same level soil, when determining the sign score value, the highest, lowest element score value is as the criterion with the highest, the lowest element score value of this soil " piece ";
322) selection of tag unit
Each unit total points in each rank and this class emblem score value are compared one by one, find out unit total points and soil level else sign score value equate or immediate unit, if such unit is unique, then as the tag unit of this grade; If it is not unique, then according to the sample points of the required configuration of this rank, selection from down town road node or street recently, the unit grid that the satisfies condition unit as a token of, the place the most concentrated, that the position is the most moderate that distributes, promptly as the rational position of sample point, simultaneously, take all factors into consideration soil rank area distributions, the sample point areal distribution is even, a tag unit only disposes a sample point, has how many sample points should select what tag unit;
323) in tag unit, locate sample point
Be meant and in numerous ground of real real-estate market, select the ancestor ground that meets the sample point standard, as sample point, when carrying out sample point space orientation, at first consider in the tag unit, near from the street, from land quality, the objective ancestor ground that all meets sample point character and essential characteristic on the distribution trend of effectiveness benefit and land price level, perhaps the individual characteristics index with sample point is a standard, adopt the relative value method that the individual characteristics on each sample ancestor ground is compared with it, can obtain the score value of each feature of sample ancestor ground, each feature score value weighted sum gets sample ancestor ground feature total points, is to the immediate ancestor of feature total points and sample point feature total points sample point.
Described E=0.1 is 95% as if confidence level, then Z=1.96.
A kind of land price investigation sample clicks the breath treating apparatus of winning the confidence, it is characterized in that, comprise land price investigation server platform, database server, client, portable terminal device, database server, client, portable terminal device connect described land price investigation server platform respectively.
Described database server is provided with 2, and wherein one is backup database server.
Described portable terminal device is mobile phone, PDA or portable computer.
Compared with prior art, the present invention has the following advantages:
(1), economic factors, probability factor, regional factor have been considered at the collection capacity of sample space.Clear and definite theoretically how to obtain rational sample size, saved sample census funds and control time, improved efficient.
(2) proposed the sample point method for determining position,, the Dynamic Monitoring System of land price and the foundation of Dynamic Monitoring Points have also been had better guide significance for quantification, the valency evaluation of robotization soil provide theories technique support.
(3) can obtain the land price distribution plan of designated precision with the less sample point of adopting.
(4) hardware configuration is simple, server platform obtains land price investigation base map information by client, by probability control sample point quantity and position, utilizes portable terminal device to determine the sample point position, show with database stores information and with client, so hardware configuration of the present invention is simple, easy to operate.
Description of drawings
Fig. 1 is a process flow diagram of the present invention;
Fig. 2 is the process flow diagram of employing land price investigation sample point choosing method of the present invention;
Fig. 3 determines the process flow diagram of the accurate location information of sample point for portable terminal device of the present invention;
Fig. 4 is a hardware configuration synoptic diagram of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
Choose enormous amount at traditional land valuation sample point, inhomogeneous in spatial distribution and precision lack characteristics such as control, the present invention specifically is based on soil the grade sampling system and the method for the control land price sample point quantity of deciding grade and level figure, clear and definite land price sample point position, to improve the sample point quality of data, to reduce sample point quantity, for quantification, robotization land valuation provide technical foundation and realization means.
Choosing of sample point collection comprises quantitatively and two links in location.How many sample points are the quantitative configuration of a sample point i.e. city, a zone should dispose.The location of sample point is chosen and promptly should how to be chosen these sample points or choose sample point where.They are two not only closely related but also relatively independent actions.The former is the latter's basis, and the latter is the former extension.The present invention is by constructing grade deciding grade and level zone of concrete sample, dissimilar evaluation indexes is the foundation that the deciding grade and level that grades is divided, and, a cover has been proposed based on sample grade the control land price sample point quantity in deciding grade and level zone, the methods of sampling of clear and definite land price sample point position according to the deciding grade and level zone of dividing that grades.
As shown in Figure 1, a kind of land price investigation sample clicks the breath disposal route of winning the confidence, and may further comprise the steps:
1) the base map information of importing from client of wanting the survey area;
2) client or portable terminal device send to land price investigation server platform with the probability precision information of setting;
3) land price investigation server platform adopts land price investigation sample point choosing method to calculate sample point quantity and recommended location information;
4) client or portable terminal device obtain sample point quantity and recommended location information;
5) by client or the selected sample point of portable terminal device;
6) database server real-time update and storage land price investigation server platform are about the quantity and the positional information of selected sample point;
As shown in Figure 2, calculating sample point quantity of the employing land price investigation sample point choosing method in the described step 3) and position may further comprise the steps:
31) carry out the sample point quantitative configuration in the suitable deciding grade and level zone that grades;
The quantity of sample point and the radiation scope of the sample point relation of being inversely proportional to, and the radiation scope of sample point depends primarily on the homogeneous degree of land quality.Land quality is got over homogeneous, and the urban land grade that deciding grade and level divides of grading is just few more, and the sample point radiation scope is big more, and the sample point quantity of required configuration is few more; Otherwise the land quality difference is big more, and the urban land grade that deciding grade and level divides of grading is just many more, and the sample point radiation scope is more little, and the sample point quantity of required configuration is many more.
Generally speaking, city size is big more, and the land quality difference is big more, urban land is divided grade deciding grade and level will be many more, the sample point quantity of requirement is also many more.In view of having finished urban land deciding grade and level work in the present most cities of China, the soil rank more fully overview the differential feature of urban land quality, therefore, present research great majority are determined the quantity of sample point in each rank with the urban land level range.Has sufficient theoretical foundation based on other sample point quantitative configuration of soil level, the size that how much depends on a urban land mass discrepancy fully that sample point quantity is chosen.Though under other control of land quality level, such condition " grade of land quality is high more, and price level is also corresponding high more " is satisfied in vertical distribution in each rank soil.But under the land management system and land market condition of reality, land quality often occurring is that costly the differing of land use realizes high land price surely, determine the number of sample point with the soil number of levels, make it in practical operation, lay negligible amounts, and skewness, the land price that calculates is not enough to accurately to reflect the land price level, so want really to understand the level of Urban Land Price, also needs to carry out finer sampling investigation.
Ground, center logos is a quantity of determining sample point in the rank according to the reach of a sample point, the sample point number how much reflected the influence that the urban size is determined land price sample points amount, so this method can satisfy the requirement of laying some sample points in each rank.The size of sample point covering radius depends primarily on the degree of the regional refinement of defining the level grading in the rank.The National Standard urban land deciding grade and level rules of grading are to require the land grading number of levels to divide 3-12 different rank according to the difference of city size, but the number of levels of dividing so far can not satisfy the requirement that a desirable sample in ground, the center logos is represented a rank zone.The soil need be graded the deciding grade and level further refinement, make the scope of each rank representative as much as possible little.The regional degree of refinement of deciding grade and level that grades in soil is mainly considered following factor in each rank: 1. other height of soil level.In general, high levelly all concentrate on the down town, in small range, the quality and the price change in high-level soil are fast with going up, and the soil deciding grade and level that grades is regional poor.Therefore, high-level soil sample point covering radius should be littler than low level soil sample point covering radius.2. city planning factor.Sample point should be laid in soil utilization and the bigger location of planning change.In addition, combination area of city and country's possibility rank is not high, but is the land price sensitizing range yet, and the representativeness of sample point is poor, should establish sample point more.
The check of sample size: sample size is relevant with investigation cost, and in the real work, investigation cost is limited, be used for determining sample size according to total investigation charge.The sampling theory proof is when carrying out sample survey, and the number of units in sample of extraction is many more, and the representativeness of the sample survey data of gained is just high more, and sampling infers that effect is just good more; Otherwise if the sampling unit number is few more, the data of the sample survey of gained is representative just low more.As seen, the number of sampling unit can not be very few, and very few sampling is inferred and just can not be got a desired effect.But the sampling unit number can not be too much, too much will increase human and material resources and expense, and in time providing of sample survey data also is provided.The reality thinking is under the condition of given expense, and how research disposes sample size, makes the variance of estimation reach minimum.Therefore, when sample survey, conscientiously study and determine an appropriate sample size, beyond doubt highly significant.
32) carrying out sample point in the deciding grade and level zone that grades chooses.
Choosing of sample point taked office operation, made an on-the-spot survey the method that combines on the spot, and concrete steps are as follows:
(1) determines the sign score value according to the land grading achievement.In principle with the sign score value of other mark intermediate value of each soil level as this rank soil; Consider degree and the score distribution situation in flakes concentrated that this rank soil distributes simultaneously, the intermediate value of grid mark of selecting this sheet soil is as the sign score value in this sheet soil;
(2) on land grading grid score chart, determine tag unit according to the sign score value, as possible sample point position, formulate sample point primary election scheme, and sample point is as far as possible evenly distributed in monitoring range.The sample point quantity of primary election scheme should be more than the determined quantity of sample point quantitative configuration;
(3) be to set up the standard of sample point with the sample point characteristic index, according to the sample point position of primary election scheme, irrational sample point is removed as sample point in the ancestor ground of selecting to meet the demands on cadastre;
The gordian technique that sample point is chosen comprises that three aspects interknit, successive content, that is: the selection and the sample point location of the determining of sign score value, tag unit.
It is exactly the process of determining the sign score value that the sign score value is selected.When the urban land graded the deciding grade and level division, each unit was own through definite score value is all arranged.Sign score value selection technology adopts median method.Respectively grade the intermediate value in deciding grade and level zone as other sign score value of this soil level with the soil.
The selection of tag unit, promptly determine the rational position of sample point according to the sign score value, it is the committed step that sample point is chosen, it makes the range of choice of sample point narrow down to land unit from whole soil rank on the one hand, narrow down to a little from face, can implement to ancestor ground at last, can reflect intuitively again on the other hand whether the quantity of sample point satisfies the actual needs of local land management, land price monitoring.Definite process of this tag unit is exactly the process that grid mark and sign score value are contrasted one by one.
Tag unit just can position sample point in tag unit after determining.The sample point positioning instant is selected the process of sample point in tag unit.This process is mainly finished on cadastre, examines in conjunction with the land deeds inquiry simultaneously.By consulting cadastre, select from a plurality of plot of tag unit that its condition meets or set up the objective ancestor ground of standard (being sample point characteristic index system) as sample point near sample point, if this ancestor ground is not unique in the tag unit, then the nearest ancestor ground in chosen distance road or node center is as sample point.
Described 31) carrying out the sample point quantitative configuration in the suitable deciding grade and level zone that grades may further comprise the steps:
311) soil grade the deciding grade and level refinement
We the soil to be graded the deciding grade and level further granular level.Recommend the every rank in downtown area to be not more than 5 hectares, be not more than 1 square kilometre in the main city, total number of levels can not be less than 20;
312) determine cost function
C＝C 0+n maxC 1
In the formula, C represents total investigation cost, C 0The necessary basic expense of investigation, C are carried out in expression 1Needed expense of sample point of expression investigation, at C one regularly, as can be known
Figure BDA0000058150680000081
It is the upper limit of sample size;
313) for the precision of the given ratio estimate P of sampling design, calculate the required minimum capacity of sample;
314) by ground, the center logos of sample point quantitative configuration, go other land area of partition level to set up sample point quantity model by the coverage of sample point, thereby determine the quantity of sample point;
315) check whether need to increase and decrease sample size,, then return step 1) and carry out the sample size increase and decrease as needs.
Described step 313), calculate the required minimum capacity of sample and may further comprise the steps for the precision of the given ratio estimate P of sampling design:
3131) calculate initial sample size
n 1 = P ( 1 - P ) E 2 Z 2 + P ( 1 - P ) N
Wherein, E is acceptable error (as E=0.1); Z is the critical value (as confidence level is 95%, then Z=1.96) of the degree of confidence of investigation estimated value; N is the population unit's number that can do sample point, and formula can be abbreviated as when very big as if N
n 1 = P ( 1 - P ) Z 2 E 2
3132) size of population is adjusted, N is the population unit's number that can do sample point
n 2 = n 1 N N + n 1
3133) if the sampling design is not simple random sampling, then sample size is adjusted, B is the design effect, and design effect explanation simple random sampling is the standard of weighing other complex sampling technique effects, usually adopt empirical method or historical data method to estimate, represent with B during calculating; When sampling is designed to simple random sampling, B=1; When sampling is designed to stratified sampling, B＜1; When sampling is designed to chester sampling, B＞1;
n 3＝Bn 2
3134) adjust the situation that there is the sample survey failure inevitably in sample survey, therefore, in factual survey, must adjust above-mentioned sample size;
Adjust the preceding sample size of back sample size=adjustment/effective sample survey rate
Estimate during calculating that effective sample survey rate represents that with r then final sample size is
n min = n 3 r .
Described step 314) the sample point quantity model of setting up in may further comprise the steps:
3141) the land price form of expression of commerce, industry and dwelling house three class lands used is respectively: route valency, rank valency and district's sheet valency, and the carrier of district's sheet valency or rank valency is planar, its sample point quantity model is:
n i = s i π r i 2
In the formula: n iIt is other sample points amount of i soil level; s iIt is i soil rank area; r iIt is the radius of action of i level sample point;
3142) the route valency is by particular street, use value are equated that front the established standards degree of depth is asked for the average unit price in several soils on this degree of depth, and is attached on the particular street, promptly obtains the route valency in this street, and the route valency is a wire; Therefore, the sample point quantity model of route valency is:
n i = l i 2 r i
In the formula: n iIt is other sample points amount of i soil level; l iIt is i soil rank link length; r iIt is the radius of action of i level sample point.
Described step 32) carrying out sample point in the zone in the deciding grade and level that grades chooses and may further comprise the steps:
321) the sign score value is selected
It is exactly the process of determining the sign score value that the sign score value is selected, when the urban land was divided, each unit was own through definite score value is all arranged, and sign score value selection technology adopts median method, as the grade sign score value in deciding grade and level zone of this rank, use following formula measuring and calculating with the intermediate value in the deciding grade and level zone of respectively grading:
T i = T i max - T i min 2
In the formula, T iThe sign score value of representing i rank soil, T ImaxBe the highest unit score value in i rank soil, T IminAs represent the lowest element score value in i level soil, for the formed soil " piece " that distributes in flakes, same level soil, when determining the sign score value, the highest, lowest element score value should be as the criterion with the highest, the lowest element score value of this soil " piece ";
322) selection of tag unit
Each unit total points in certain rank and this class emblem score value are contrasted one by one, find out unit total points and soil level else sign score value equate or immediate unit, if such unit is unique, then as the tag unit of this grade; If the unit is not unique, then according to the sample points of the required configuration of this rank, selection from down town road node or street recently, the unit grid that the satisfies condition unit as a token of, the place the most concentrated, that the position is the most moderate that distributes, promptly as the rational position of sample point, simultaneously, take all factors into consideration soil rank area distributions, accomplish that the sample point areal distribution is even, this unit grid is not that unique, tag unit only disposes a sample point, has how many sample points should select what tag unit;
323) in tag unit, locate sample point
Be meant and in numerous ground of real real-estate market, select the ancestor ground that meets the sample point standard, as sample point, there is a plurality of objective ancestors ground in the tag unit, ancestor ground different, the area great disparity is also very big, when carrying out sample point space orientation, at first consider in the tag unit, near from the street, from land quality, the objective ancestor ground that all meets sample point character and essential characteristic on the distribution trend of effectiveness benefit and land price level, perhaps the individual characteristics index with sample point is a standard, adopt the relative value method that the individual characteristics on each sample ancestor ground is compared with it, can obtain the score value of each feature of sample ancestor ground, each feature score value weighted sum gets sample ancestor ground feature total points, is to the immediate ancestor of feature total points and sample point feature total points sample point; Under the prerequisite that meets the plot standard, on a plurality of directions of each section, each road node, sample point is set evenly as far as possible; Select to close on the street as far as possible, and do not comprise, do not cross over the plot in street; Because the traffic land used is that the probability of permanent public design, marketing is less, and some both sides, street merchant to obey bustling degree obvious because of microcosmic position condition effect difference, so sample point should be arranged on the same side in street, and not across the street; In practical operation, in order to demonstrate fully the publicity feature of sample point, can be behind the definite position of sample point in tag unit, the objective ancestor ground of selecting this position is as sample point.
As shown in Figure 3, the job step of described portable terminal device is as follows:
1) crypto module of portable terminal device sends land price investigation sample point to land price investigation server platform and chooses solicited message;
2) land price investigation server platform password check is confirmed the portable terminal device identity, calls electronic map information and returns to portable terminal device to database server;
3) portable terminal device input sample probability precision sends solicited message to land price investigation server platform;
4) the land price investigation sample point choosing method that passes through of land price investigation server platform, calculating sample point quantity and position, storing sample dot information and return to portable terminal device in database server;
5) the GPS positioning function that provides according to the GPS unit of portable terminal device finds the approximate location of the concrete sample point that will investigate, the confirmatory sample dot position information, and send to land price investigation server platform;
6) land price investigation server platform receives the sample point positional information, and storage is also upgraded sample point positional information in the database server.
As shown in Figure 4, a kind of land price investigation sample clicks the breath treating apparatus of winning the confidence, comprise land price investigation server platform 1, database server 2, client 3, portable terminal device 4, described land price investigation server platform 1 database server 2, client 3, portable terminal device 4 respectively connects.
1) in this example land price investigation server platform 1 be responsible for handling sample click mutual, the portable terminal device 4 got between computing, client 3 and the database server 2 and database server 2 alternately.
2) database server 2 is used for storage, record, management, upgrades base map information, probabilistic information, sample point information in this example, and it is based upon on 1 or the multiple servers.When database was based upon on 2 station servers, wherein a station server was used for Hot Spare, and when runtime server broke down, the backup server automatically starting ran without interruption to guarantee system.Database server possesses anti-virus and anti-hacking ability simultaneously.
3) interface and the interface that client 3 is investigated the base map data as input in this example links to each other with land price investigation server platform 1.It is used for typing base map data; Generate result map demonstration and output; Instruction shows, writes down, changes and deletion sample point position; Authority is provided with etc.
4) portable terminal device 4 comprises that specifically mobile phone, PDA, portable computer etc. have the equipment of communication session function.These terminals are connected with land price investigation server platform 1 by communication network, are used for transmission probability precision information, cartographic information, sample point information.

Claims (10)

1. a land price investigation sample clicks the breath disposal route of winning the confidence, and it is characterized in that, may further comprise the steps:
1) the base map information of importing from client of wanting the survey area;
2) client or portable terminal device send to land price investigation server platform with the probability precision information of setting;
3) land price investigation server platform adopts land price investigation sample point choosing method to calculate sample point quantity and recommended location information;
4) client or portable terminal device obtain sample point quantity and recommended location information;
5) by client or the selected sample point of portable terminal device;
6) database server real-time update and storage land price investigation server platform are about the quantity and the positional information of selected sample point.
2. a kind of land price investigation sample according to claim 1 clicks the breath disposal route of winning the confidence, and it is characterized in that, the employing land price investigation sample point choosing method in the described step 3) calculates sample point quantity and the position may further comprise the steps:
31) carry out the sample point quantitative configuration in the suitable deciding grade and level zone that grades;
32) carrying out sample point in the deciding grade and level zone that grades chooses.
3. a kind of land price investigation sample according to claim 2 clicks the breath disposal route of winning the confidence, and it is characterized in that described 31) carry out the sample point quantitative configuration in the suitable deciding grade and level zone that grades and may further comprise the steps:
311) soil grade the deciding grade and level refinement
With the soil grade the deciding grade and level further granular level; The every rank in downtown area is not more than 5 hectares, is not more than 1 square kilometre in the main city, and total number of levels can not be less than 20;
312) determine cost function
C＝C 0+n maxC 1
In the formula, C represents total investigation cost, C 0The necessary basic expense of investigation, C are carried out in expression 1Needed expense of sample point of expression investigation, at C one regularly, as can be known It is the upper limit of sample size;
313) for the precision of the given ratio estimate P of sampling design, calculate the required minimum capacity of sample;
314) by ground, the center logos of sample point quantitative configuration, go other land area of partition level to set up sample point quantity model by the coverage of sample point, thereby determine the quantity of sample point;
315) check whether need to increase and decrease sample size,, then return step 1) and carry out the sample size increase and decrease as needs.
4. a kind of land price investigation sample according to claim 3 clicks the breath disposal route of winning the confidence, and it is characterized in that described step 313) for the precision of the given ratio estimate P of sampling design, calculate the required minimum capacity of sample and may further comprise the steps:
3131) calculate initial sample size
Wherein, E is acceptable error; Z is the critical value of the degree of confidence of investigation estimated value; N is the population unit's number that can do sample point, and formula can be abbreviated as when very big as if N
Figure FDA0000058150670000022
3132) size of population is adjusted, N is the population unit's number that can do sample point
Figure FDA0000058150670000023
3133) if the sampling design is not simple random sampling, then sample size is adjusted, B is the design effect, and design effect explanation simple random sampling is the standard of weighing other complex sampling technique effects, usually adopt empirical method or historical data method to estimate, represent with B during calculating; When sampling is designed to simple random sampling, B=1; When sampling is designed to stratified sampling, B＜1; When sampling is designed to chester sampling, B＞1;
n 3＝Bn 2
3134) adjust the situation that there is the sample survey failure inevitably in sample survey, therefore, in factual survey, must adjust above-mentioned sample size;
Adjust the preceding sample size of back sample size=adjustment/effective sample survey rate
Estimate during calculating that effective sample survey rate represents that with r then final sample size is
Figure FDA0000058150670000024
5. a kind of land price investigation sample according to claim 3 clicks the breath disposal route of winning the confidence, and it is characterized in that described step 314) in the sample point quantity model of setting up may further comprise the steps:
3141) the land price form of expression of commerce, industry and dwelling house three class lands used is respectively: route valency, rank valency and district's sheet valency, and the carrier of district's sheet valency or rank valency is planar, its sample point quantity model is:
Figure FDA0000058150670000025
In the formula: n iIt is other sample points amount of i soil level; s iIt is i soil rank area; r iIt is the radius of action of i level sample point;
3142) the route valency is by particular street, use value are equated that front the established standards degree of depth is asked for the average unit price in several soils on this degree of depth, and is attached on the particular street, promptly obtains the route valency in this street, and the route valency is a wire; Therefore, the sample point quantity model of route valency is:
Figure FDA0000058150670000031
In the formula: n iIt is other sample points amount of i soil level; l iIt is i soil rank link length; r iIt is the radius of action of i level sample point.
6. a kind of land price investigation sample according to claim 2 clicks the breath disposal route of winning the confidence, and it is characterized in that described step 32) carry out sample point in the zone in the deciding grade and level that grades and choose and may further comprise the steps:
321) the sign score value is selected
It is exactly the process of determining the sign score value that the sign score value is selected, when the urban land was divided, each unit was own through definite score value is all arranged, and sign score value selection technology adopts median method, as the grade sign score value in deciding grade and level zone of this rank, use following formula measuring and calculating with the intermediate value in the deciding grade and level zone of respectively grading:
Figure FDA0000058150670000032
In the formula, T iThe sign score value of representing i rank soil, T ImaxBe the highest unit score value in i rank soil, T IminAs represent the lowest element score value in i level soil, for the formed soil " piece " that distributes in flakes, same level soil, when determining the sign score value, the highest, lowest element score value is as the criterion with the highest, the lowest element score value of this soil " piece ";
322) selection of tag unit
Each unit total points in each rank and this class emblem score value are compared one by one, find out unit total points and soil level else sign score value equate or immediate unit, if such unit is unique, then as the tag unit of this grade; If it is not unique, then according to the sample points of the required configuration of this rank, selection from down town road node or street recently, the unit grid that the satisfies condition unit as a token of, the place the most concentrated, that the position is the most moderate that distributes, promptly as the rational position of sample point, simultaneously, take all factors into consideration soil rank area distributions, the sample point areal distribution is even, a tag unit only disposes a sample point, has how many sample points should select what tag unit;
323) in tag unit, locate sample point
Be meant and in numerous ground of real real-estate market, select the ancestor ground that meets the sample point standard, as sample point, when carrying out sample point space orientation, at first consider in the tag unit, near from the street, from land quality, the objective ancestor ground that all meets sample point character and essential characteristic on the distribution trend of effectiveness benefit and land price level, perhaps the individual characteristics index with sample point is a standard, adopt the relative value method that the individual characteristics on each sample ancestor ground is compared with it, can obtain the score value of each feature of sample ancestor ground, each feature score value weighted sum gets sample ancestor ground feature total points, is to the immediate ancestor of feature total points and sample point feature total points sample point.
7. a kind of land price investigation sample according to claim 4 clicks the breath disposal route of winning the confidence, and it is characterized in that, described E=0.1 is 95% as if confidence level, then Z=1.96.
8. a land price investigation sample clicks the breath treating apparatus of winning the confidence, it is characterized in that, comprise land price investigation server platform, database server, client, portable terminal device, database server, client, portable terminal device connect described land price investigation server platform respectively.
9. a kind of land price investigation sample according to claim 8 clicks the breath treating apparatus of winning the confidence, and it is characterized in that, described database server is provided with 2, and wherein one is backup database server.
10. a kind of land price investigation sample according to claim 8 clicks the breath treating apparatus of winning the confidence, and it is characterized in that, described portable terminal device is mobile phone, PDA or portable computer.
CN2011101092666A 2011-04-28 2011-04-28 Method and device for processing selected information of sample points in land price survey Pending CN102184470A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103413065A (en) * 2013-09-02 2013-11-27 中国动物卫生与流行病学中心 Sample number calculator for comparing incidence proportions of different groups
CN103425619A (en) * 2013-09-02 2013-12-04 中国动物卫生与流行病学中心 Sampling quantity calculator for proving epidemic-disease inexistence or finding epidemic disease
CN103413065B (en) * 2013-09-02 2016-11-23 中国动物卫生与流行病学中心 The relatively amount of sampling computer of different groups disease rates
CN107844670A (en) * 2017-12-04 2018-03-27 厦门理工学院 The computational methods of sample size needed for a kind of harmonic wave statistics
CN109003117A (en) * 2018-06-14 2018-12-14 万翼科技有限公司 Generation method, device and the computer readable storage medium of questionnaire
CN111967771A (en) * 2020-08-18 2020-11-20 深圳市维度统计咨询股份有限公司 Data quality management method and device based on big data and storage medium
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