CN102142003A - Method and device for providing point of interest information - Google Patents
Method and device for providing point of interest information Download PDFInfo
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- CN102142003A CN102142003A CN 201010244157 CN201010244157A CN102142003A CN 102142003 A CN102142003 A CN 102142003A CN 201010244157 CN201010244157 CN 201010244157 CN 201010244157 A CN201010244157 A CN 201010244157A CN 102142003 A CN102142003 A CN 102142003A
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Abstract
The invention provides a method and a device for providing point of interest (POI) information. The method comprises the following steps of: receiving a query request; transmitting the query request to a geographic information system (GIS) platform and a virtual server environment (VSE) system; calculating similarity between the first basic POI information returned by the GIS platform and the second basic POI information returned by the VSE system; evaluating the similarity; and making supplementary information which corresponds to the second basic POI information meeting the similarity evaluation criteria and the first basic POI information form enhanced POI information, and providing the enhanced POI information for a user. The enhanced POI information is a combination of the first basic POI information and the supplementary information which is returned by the VSE system, and the information returned by the VSE system is the currently acquired information. Therefore, the provided POI information can be timely updated after webpage contents of the VSE system are changed.
Description
Technical field
The embodiment of the invention relates to Internet technical field, relates in particular to a kind of point of interest (Point of Interest is called for short POI) information providing method and device.
Background technology
Huge variation has all taken place in China Internet user's request in recent years and online information obtain manner, from Internet user's the life style and the custom of living, development along with urban construction, trans-regional movement of population is frequent all the more, people are also just strong all the more to the demand of cartographic information, and most of Internet users are interested in positional information at one's side, utilize search engine searches product and information to become more and more Internet users' use habit.
After the user searches correlated results at a certain demand, need utilize the map search location again, when these information of searching for gained on webpage can not satisfy cartographic information demand that the user becomes more meticulous and local information demand, for satisfying user's demand, information service more, more professional, more personalized is provided, integrates the pattern of multiple local information and arise at the historic moment.
POI is a kind of of map datum, and important status is arranged in map application, and POI information generally includes the title of POI, the affiliated classification of POI (for example food and drink, amusement, school, communal facility etc.), the coordinate of POI, address information and telephone number.By POI information, people select or decision action destination, even navigate to this POI, and it is very large convenient to bring to the user like this, and these are very important data during POI uses.For example, the restaurant information on map comprises title, longitude and latitude, address and contact method (normally telephone number).
Some companies, Google (Google) for example, their search engine provides information such as clothing, food, lodging and transportion--basic necessities of life for our life, comprising classified informations such as house, work, food and drink, train ticket and movie news.Everybody uses for convenience, and the integration with other Google's products is paid close attention in the life search more, by the integration of map and mobile search, makes that the contact of life information and geography information is tightr, obtains also more convenient simultaneously.User's demand is strengthened function of browse simultaneously, makes that we can easily be by clicking, browse the information of obtaining.
The classified information of each life information website on the domestic internet that data content is mainly included from google search engine, and the content that provides of affiliate.
The process that Google obtains POI information is as follows:
Google search engine is by webpage capture program (spider), and webpage is grasped in each life information website from the internet, and this operation is also referred to as snapshots of web pages.After google search engine grabs webpage, to the information classification of the webpage that grabs, set up index file, row is heavy, analyzes hyperlink, analyzes the accuracy and the integrality of data.
Key word according to user's input is retrieved, and perhaps keyword and classification results is complementary, and finds the data with this keyword matching from index data base.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art:
Adopt the webpage capture program to grasp info web, to setting up index data base after the information classification of webpage again, in case the content of webpage changes the data in the index data base that then can't upgrade in time from webpage.
Summary of the invention
The embodiment of the invention provides a kind of POI information providing method and device, the problem that the POI information that provides after the web page contents of vertical search engine (Vertical Search Engine is called for short VSE) system changes in order to POI information providing method in the solution prior art can't upgrade in time.
The embodiment of the invention provides a kind of POI information providing method, comprising:
Receive query requests;
Send described query requests to Geographic Information System (Geographic Information System is called for short GIS) platform and VSE system;
Receive the information that the first basic POI information that the GIS platform returns and VSE system return, the information that described VSE system returns comprises second basic POI information and the side information;
Similarity between the second basic POI information that first basic POI information that calculating GIS platform returns and VSE system return;
Assess described similarity;
The side information of the second basic POI information correspondence that satisfies the similarity assessment standard and the described first basic POI information are formed the POI information that strengthens, the POI information that strengthens is offered the user.
The embodiment of the invention also provides a kind of POI information provider unit, comprising:
First receiver module is used to receive query requests;
Sending module is used to send query requests that described first receiver module receives to GIS platform and VSE system;
Second receiver module is used to receive the information that the first basic POI information that the GIS platform returns and VSE system return, and the information that described VSE system returns comprises second basic POI information and the side information;
Computing module is used to calculate the similarity between the second basic POI information that the first basic POI information that described GIS platform that second receiver module receives returns and VSE system return;
Evaluation module is used to assess the similarity that described acquisition module obtains;
Processing module is used for the side information of the second basic POI information correspondence of assessing, satisfy the similarity assessment standard through described evaluation module and the described first basic POI information are formed the POI information that strengthens, and the POI information that strengthens is offered the user.
POI information providing method and device that the embodiment of the invention provides, after receiving query requests, send query requests to GIS platform and VSE system, second basic POI information and the side information that first basic POI information that reception GIS platform returns and the 2nd VSE system return, the side information of the second basic POI information correspondence that satisfies the similarity assessment standard and the first basic POI information are formed the POI information that strengthens, the POI information of this enhancing is offered the user.The POI information that strengthens is the combination of the side information returned of first essential information and VSE system, and the information that the VSE system returns is the current information of obtaining, the problem that the POI information that so just can overcome provides after the web page contents of VSE system changes in the prior art can't upgrade in time.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Figure 1 shows that the process flow diagram of POI information providing method embodiment one of the present invention;
Figure 2 shows that the process flow diagram of POI information providing method embodiment two of the present invention;
Figure 3 shows that the process flow diagram of POI information providing method embodiment three of the present invention;
Figure 4 shows that the structural representation of POI information provider unit embodiment of the present invention;
Figure 5 shows that the structural representation of POI information providing system embodiment of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Be illustrated in figure 1 as the process flow diagram of POI information providing method embodiment one of the present invention, comprise:
The information that first basic POI information that step 103, reception GIS platform return and VSE system return, the information that the VSE system returns comprises second basic POI information and the side information.
Similarity between the second basic POI information that first basic POI information that step 104, calculating GIS platform return and VSE system return.
The method that the embodiment of the invention one provides, after receiving query requests, send query requests to GIS platform and VSE system, second basic POI information and the side information that first basic POI information that reception GIS platform returns and the 2nd VSE system return, the side information of the second basic POI information correspondence that satisfies the similarity assessment standard and the first basic POI information are formed the POI information that strengthens, the POI information of this enhancing is offered the user.The POI information that strengthens is the combination of the side information returned of first essential information and VSE system, and the information that the VSE system returns is the current information of obtaining, that is to say that the information that the VSE system returns is up-to-date, the problem that the POI information that so just can overcome provides in the prior art can't upgrade in time after the web page contents of VSE system changes.
In embodiment one, query requests can comprise at least one key word, and the first basic POI information can comprise at least one first result; The second basic POI information can comprise at least one second result.
Particularly, at least one first result comprise can the first title result, the first contact method result and the first longitude and latitude result; At least one second result can comprise the second title result, the second contact method result and the second longitude and latitude result.If the quantity of VSE system is greater than one, so in the step 104, obtain the sub-similarity between each second result in the second basic POI information that each first result in the first basic POI information that the GIS platform returns and described VSE system return, specifically can comprise:
The first sub-similarity between step 104a, the calculating first title result and the second title result.
The second sub-similarity between step 104b, the calculating first contact method result and the second contact method result.
The 3rd sub-similarity between step 104c, the calculating first longitude and latitude result and the second longitude and latitude result.
Above-mentioned steps 104a, 104b and 104c can successively carry out, and also can carry out simultaneously, do not have concrete sequential restriction.
In the step 104, calculate the comprehensive similarity of each sub-similarity, specifically can comprise: the first sub-similarity, the second sub-similarity and the 3rd sub-similarity are weighted, calculate the comprehensive similarity of each sub-similarity, this comprehensive similarity is the sub-similarity between each second result in the second basic POI information returned of each first result in the first basic POI information returned of described GIS platform and VSE system.
The quantity of VSE system is during greater than one, when the similarity of calculating between second basic POI information that each VSE system returns and the first basic POI information of returning from the GIS platform, can adopt above-mentioned steps 104a-104c, obtain comprehensive similarity based on each sub-similarity that step 104a-104c calculates.
Step 104a specifically can comprise: calculating to the number of characters that the second title result need change, is calculated the first sub-similarity from the first title results change.
Step 104b specifically can comprise: calculate the characters matched number between the first contact method result and the second contact method result, calculate the second sub-similarity between the first contact method result and the second contact method result.
Step 104c specifically can comprise: judge the first longitude and latitude result and the second longitude and latitude result whether in same predeterminable area, if in same predeterminable area, then the 3rd sub-similarity between the first longitude and latitude result and the second longitude and latitude result is 1; If not in same predeterminable area, then the 3rd sub-similarity between the first longitude and latitude result and the second longitude and latitude result is 0.
The weighted value of giving for each sub-similarity can be provided with according to actual needs, for example, be that the weighted value that the first sub-similarity is given can be 0.2, be that the weighted value that the second sub-similarity is given can be 0.3, be that the weighted value that the 3rd sub-similarity is given can be 0.5, each sub-similarity sum equals 1.The product of each sub-similarity and separately weighted value and be exactly comprehensive similarity.
If the VSE system quantity equals one, the side information of the second basic POI information correspondence that this VSE system can be returned joins and forms the POI information that strengthens in the first basic POI information so.
If the VSE system quantity greater than one, can screen by the second basic POI information that each VSE system is returned so, select and the first basic POI information similarity second basic POI information comparatively.Concrete grammar can be to set a first threshold, and this first threshold is a default similarity, and the value of the similarity that this is default can be determined according to actual conditions, whether assess each similarity more than or equal to first threshold.
Under the situation about having, although adopt first threshold can filter out some second basic POI information, but these that the filter out second basic POI information still can't meet the demands, can assess each similarity by additional assessment mode so, thereby filter out the satisfactory second basic POI information.
Specifically can comprise: the 4th sub-similarity of calculating the first address result and each second address result; Judgement more than or equal to the 4th sub-similarity of each second basic POI information correspondence of first threshold whether more than or equal to second threshold value; Wherein, the first basic POI information also comprises the first address result, and the second basic POI information also comprises the second address result.Second threshold value also is a default similarity, and the value of the similarity that this is default also can determine that second threshold value can equate with first threshold, also can be different from first threshold according to actual conditions.
Step 106 specifically can comprise: the 4th sub-similarity is formed the POI information that strengthens more than or equal to the side information and the first basic POI information of the second basic POI information correspondence of second threshold value, the POI information of this enhancing is offered the user.
Describe the implementation of embodiment provided by the invention in detail below by concrete example.
Be illustrated in figure 2 as the process flow diagram of POI information providing method embodiment two of the present invention, comprise:
Step 201, POI information provider unit receive query requests.
For example, the POI information provider unit receives the query requests that is used to inquire about catering information, comprise " little fertile sheep ", " Beijing ", " food and drink " these three key words in this query requests, these three key words show the user wish to find the place in Beijing, title is the catering information of little fertile sheep.
Step 203a, POI information provider unit receive the first basic POI information that the GIS platform returns, and this first basic POI information comprises: first title result, the i.e. restaurant name; The first longitude and latitude result, the i.e. longitude and latitude in restaurant; The first contact method result, the i.e. contact method in restaurant; The first address result, the i.e. address information in restaurant.Be the content of the first basic POI information returned from the GIS platform as shown in Table 1.
The content of table one, the first basic POI information returned from the GIS platform
| Restaurant name | Little fertile sheep chafing dish restaurant (Dongzhimennei Dajie) |
| The address | No. 209, Beijing Dongzhimennei Dajie |
| Contact method | 010-84001669 |
| Longitude and latitude | locx＝116.42065，locy＝39.94114 |
Step 203b, POI information provider unit receive the second basic POI information of returning from the public praise net, and this second basic POI information comprises: the second title result, and the title in dining room; The second longitude and latitude result, the i.e. longitude and latitude in dining room; The second contact method result, the i.e. contact method in dining room; The second address result, the i.e. address information in dining room.
The information of returning from the public praise net is except the second basic POI information, also comprise side information, these side informations can comprise: the introduction in dining room, pre-capita consumption price, the style of cooking, specialty, label, business hours, evaluation, parking lot, environment, service, discount, recommendation menu, information such as whether support to swipe the card.Be the content of the information returned from the public praise net as shown in Table 2.
The content of table two, the information returned from the public praise net
Step 203c, POI information provider unit receive the second basic POI information of returning from the comment net, and this second basic POI information comprises: the second title result, the i.e. title in dining room; The second longitude and latitude result, the i.e. longitude and latitude in dining room; The second contact method result, the i.e. contact method in dining room; The second address result, the i.e. address information in dining room.
From the information returned of comment net except the second basic POI information, also comprise side information, these side informations also can comprise: the introduction in dining room, pre-capita consumption price, the style of cooking, specialty, label, business hours, evaluation, parking lot, environment, service, discount, recommendation menu, information such as whether support to swipe the card.Be the content of the information returned from the public praise net as shown in Table 3.
Table three, from the content of the information returned of comment net
Above-mentioned steps 203a, 203b and 203c can carry out simultaneously, also can successively carry out, and do not have the sequential restriction.
From table two and table three as can be seen, from the second basic POI information that public praise net and comment net return, include the second title result, the second longitude and latitude result, the second contact method result and the second address result, so, need to determine the second basic POI information returned from the public praise net and from the similarity between the first basic POI information of commenting on the second basic POI information that net returns and returning from the GIS platform.
(1) calculate the second basic POI information returned from the public praise net and the first basic POI information returned from the GIS platform between first similarity.
Second title result in A, the calculating second basic POI information and the first sub-similarity between the first title result in the first basic POI information.
The second title result and the first title result are the titles in dining room, that is to say that the second title result possesses identical attribute with the first title result.
The formula that calculates the first sub-similarity can be as follows:
Sim(Name1)
=Sim (POI (gd). food and drink title, Info (kb). the food and drink title)
=1-ED (POI (gd). food and drink title, POI (kb). the food and drink title)/MAX (strlen (POI (gd). the food and drink title), strlen (POI (kb). the food and drink title))
The little fertile sheep chafing dish restaurant of=1-ED (" (Dongzhimennei Dajie) ", " shop, Dongzhimen, little fertile sheep chafing dish Dongcheng District ")/Max (14,12)
＝1-10/14
＝0.29 (1)
Wherein, Sim represents similarity function.Sim (Name1) expression from the second basic POI information that the public praise net returns the second title result and the first sub-similarity between the first title result in the first basic POI information returned of GIS platform.ED represents the editing distance operating function, and MAX gets max function, and strlen is the string length function." POI (gd). the food and drink title " the first title result of expression from the first basic POI information that high moral GIS platform returns, " POI (kb). the food and drink title " the second title result of expression from the second basic POI information that the public praise net returns.Strlen (POI (gd). the food and drink title) the first title result's that returns from high moral GIS platform of expression the length of character string, strlen (POI (kb). the food and drink title) the second title result of expression from the second basic POI information that the public praise net returns the length of character string.
In various embodiments of the present invention, editing distance is meant from first character string and changes to the number of characters that second character string need change.ED (POI (gd). food and drink title, POI (kb). the food and drink title) expression from " little fertile sheep chafing dish restaurant (Dongzhimennei Dajie) " this character string changes to " shop, Dongzhimen, little fertile sheep chafing dish Dongcheng District " this character string number of characters that need change.
From formula (1) as can be seen, with ED (POI (gd). the food and drink title, POI (kb). the food and drink title) value divided by MAX (strlen (and POI (gd). the food and drink title), strlen (POI (kb). the food and drink title)), be equivalent to ED (POI (gd). food and drink title, POI (kb). the food and drink title) carried out normalization.
Second contact method result in B, the calculating second basic POI information and the second sub-similarity between the first contact method result in the first basic POI information.
The second contact method result and the first contact method result are the contact methods in dining room, that is to say that the second contact method result possesses identical attribute with the first contact method result.
The formula that calculates the second sub-similarity can be as follows:
Sim(TEL1)
=Sim (POI (gd). contact method, POI (kb). contact method)
=substr (POI (gd). contact method, POI (kb). contact method)/MIN (strlen (POI (gd). contact method), strlen (POI (kb). contact method))
＝substr(“010-84001669”，”010-84001669”)/MIN(11，11)
＝11/11
＝1 (2)
In the formula (2), Sim (TEL1) expression from the second basic POI information that the public praise net returns the second contact method result and second similarity between the first contact method result in the first basic POI information returned of GIS platform.Substr is the substring adaptation function.MIN gets minimum value function." POI (gd). contact method " the first contact method result of expression from the first basic POI information that the GIS platform returns, " POI (kb). contact method " the second contact method result of expression from the second basic POI information that the public praise net returns.Substr (POI (gd). contact method, POI (kb). contact method) expression from the first basic POI information that high moral GIS platform returns the first contact method result and second contact method from comment on the second basic POI information that net returns in the number of the substring that mates.
Second longitude and latitude result in C, the calculating second basic POI information and the 3rd sub-similarity between the first longitude and latitude result in the first basic POI information.
The second longitude and latitude result and the first longitude and latitude result are the latitude and longitude information in dining room, that is to say, the second longitude and latitude result possesses identical attribute with the first longitude and latitude result.
Calculating third phase can be as follows like the formula of degree:
Sim(XY1)
=Sim (POI (gd). longitude and latitude, POI (kb). longitude and latitude)
=Range (radius (POI (gd). longitude and latitude, r), radius (POI (kb). longitude and latitude, r))
＝1 (3)
In the formula (3), Sim (XY1) expression from the second basic POI information that the public praise net returns the second longitude and latitude result and the 3rd sub-similarity between the first longitude and latitude result in the first basic POI information returned of GIS platform.Range is a range function, is used for determining whether the second longitude and latitude result belongs to identical predeterminable area with the first longitude and latitude result.Predeterminable area is to set a fixed area according to actual needs." POI (gd). longitude and latitude " the first longitude and latitude result of expression from the first basic POI information that the GIS platform returns, " POI (kb). longitude and latitude " the second longitude and latitude result of expression from the second basic POI information that the public praise net returns.Radius (POI (gd). longitude and latitude, r) expression is that center, r are the zone of radius with the first longitude and latitude result, radius (POI (kb). longitude and latitude, r) the second longitude and latitude result in the second basic POI information of representing to return with the public praise net is that center, r are the zone of radius.Range (radius (POI (gd). longitude and latitude, r), radius (POI (kb). longitude and latitude, r)) expression is that center, r are the zone of radius and are that center, r are whether the zone of radius is all in predeterminable area with the second longitude and latitude result with the first longitude and latitude result, if the two is in same predeterminable area, then Range (radius (and POI (gd). longitude and latitude, r), radius (POI (kb). longitude and latitude, r)) equal 1, otherwise Range (radius (POI (gd). longitude and latitude, r), radius (POI (kb). longitude and latitude, r)) equal 0.
First comprehensive similarity of D, the calculating second basic POI information and the first basic POI information
Can obtain comprehensive similarity by the first sub-similarity, the second sub-similarity and the 3rd sub-similarity being weighted calculate.Consider that for same restaurant the restaurant name that different Data Sources obtains may be different, and contact method may be distinguished not quite, like this, can be respectively first similarity, second similarity and third phase and give different weights like degree.For example, the weight of the first similarity correspondence can be that the weight of 0.2, the second similarity correspondence can be 0.5, and third phase can be 0.3 like the corresponding weight of degree.The weight sum of these three similarity correspondences equals 1.
First comprehensive similarity is as follows:
T_SIM(POI(gd)，Info(kb))
＝Sim(NAME1)*W1+Sim(TEL1)*W2+Sim(XY1)*W3
＝0.29*0.2+1*0.5+1*0.3
＝0.8058 (4)
In the formula (4), T_SIM (POI (gd), Info (kb)) is first comprehensive similarity between the second basic POI information returned from the public praise net and the first basic POI information returned from the GIS platform, W1 is the weight of the first similarity correspondence, W2 is the weight of the second similarity correspondence, and W3 is that third phase is like the corresponding weight of degree.
(2) calculate second essential information returned from the comment net and the first basic POI information returned from the GIS platform between second comprehensive similarity.
Second title result in A, calculating second essential information and the first sub-similarity between the first title result in the first basic POI information.
The formula that calculates the first sub-similarity can be as follows:
Sim(Name2)
=Sim (POI (gd). food and drink title, POI (dp). the food and drink title)
=1-ED (POI (gd). food and drink title, POI (dp). the food and drink title)/MAX (strlen (POI (gd). the food and drink title), strlen (Info (dp). the food and drink title))
The little fertile sheep chafing dish restaurant of=1-ED (" (Dongzhimennei Dajie) ", " little fertile sheep (shop, Dongzhimen) ")/Max (14,9)
＝1-7/14
＝0.5 (5)
In the formula (5), Sim (Name2) expression from the second basic POI information that the comment net returns the second title result and first similarity between the first title result in the first basic POI information returned of GIS platform.POI (dp). the food and drink title " the second title result of expression from the second basic POI information that the comment net returns.Strlen (POI (dp). the food and drink title) the second title result of expression from the second basic POI information returned of comment net the length of character string.
Second contact method result in B, the calculating second basic POI information and the second sub-similarity between the first contact method result in the first basic POI information.
The formula that calculates second similarity can be as follows:
Sim(TEL2)
=Sim (POI (gd). contact method, POI (dp). contact method)
=substr (POI (gd). contact method, Info (dp). contact method)/MIN (strlen (POI (gd). contact method), strlen (Info (dp). contact method))
＝substr(“010-84001669”，”010-84001669”)/MIN(11，11)
＝11/11
＝1 (6)
In the formula (6), Sim (TEL2) expression from the second basic POI information that the comment net returns the second contact method result and second similarity between the first contact method result in the first basic POI information returned of GIS platform." POI (dp). contact method " the second contact method result of expression from the second basic POI information that the comment net returns.Substr (POI (gd). contact method, POI (dp). contact method) expression from the first basic POI information that the GIS platform returns the first contact method result and second contact method from comment on the second basic POI information that net returns in the number of the substring that mates.
Second longitude and latitude result in C, the calculating second basic POI information and the 3rd sub-similarity between the first longitude and latitude result in the first basic POI information.
Calculating third phase can be as follows like the formula of degree:
Sim(XY2)
=Sim (POI (gd). longitude and latitude, POI (dp). longitude and latitude)
=Range (radius (POI (gd). longitude and latitude, r), radius (POI (dp). longitude and latitude, r))
＝1 (7)
In the formula (7), Sim (XY2) expression from the second basic POI information that the comment net returns the second longitude and latitude result and the third phase between the first longitude and latitude result in the first basic POI information returned of GIS platform seemingly spend." POI (dp). longitude and latitude " the second longitude and latitude result of expression from the second basic POI information that the comment net returns.Radius (POI (kb). longitude and latitude, r) the second longitude and latitude result in the second basic POI information of representing to return with the comment net is that center, r are the zone of radius.Range (radius (POI (gd). longitude and latitude, r), radius (POI (kb). longitude and latitude, r)) expression is that center, r are that the second longitude and latitude result in the zone of radius and the second basic POI information returned with the comment net is that center, r are whether the zone of radius is all in predeterminable area with the first longitude and latitude result.
Second comprehensive similarity of D, the calculating second basic POI information and the first basic POI information
The comprehensive similarity of the first basic POI information of returning from the comment second basic POI information returned of net with from the GIS platform is as follows:
T_SIM(POI(gd)，POI(dp))
＝Sim(NAME2)*W1+Sim(TEL2)*W2+Sim(XY2)*W3
＝0.5*0.2+1*0.5+1*0.3
＝0.810 (8)
In the formula (8), T_SIM (POI (gd), POI (dp)) is second comprehensive similarity between the first basic POI information of returning from the comment second basic POI information returned of net with from the GIS platform.
Obtained T_SIM (POI (gd), POI (dp)) and T_SIM (POI (gd), Info (kb)) afterwards, assess this two comprehensive similarity, the side information of the second basic POI information that satisfies the similarity correspondence of similarity assessment standard is added in the first basic POI information.
Can judge at first that first comprehensive similarity and second comprehensive similarity whether more than or equal to first threshold, suppose that first threshold equals 0.8.
The first comprehensive similarity T_SIM (POI (gd), Info (kb))=0.8058 is greater than 0.8, the second comprehensive similarity T_SIM (POI (gd), POI (dp))=0.810, greater than 0.8.So first comprehensive similarity and second comprehensive similarity are all more than or equal to first threshold.
Then, calculating from the second basic POI information returned of comment net the second address result and the 4th sub-similarity between the first address result from the first basic POI information that the GIS platform returns, calculating from the second basic POI information that the public praise net returns the second address result and the 4th sub-similarity between the first address result from the first basic POI information that the GIS platform returns.
Particularly, can determine the 4th sub-similarity by the geographical knowledge storehouse.To be input in the geographical knowledge storehouse from the second address result and the first address result from the first basic POI information that the GIS platform returns the second basic POI information that the comment net returns, the 4th sub-similarity can be determined according to geographical knowledge in the geographical knowledge storehouse.First address in the first basic POI information that the GIS platform returns is " No. 209, Beijing Dongzhimennei Dajie ", second address from the second basic POI information returned of comment net is No. 209, a Dongcheng District Dongzhimennei Dajie " (side street in the Near East) ", and the geographical knowledge storehouse can determine that the 4th sub-similarity between these two addresses is 0.98.
To be input in the geographical knowledge storehouse from second address result the second basic POI information that the public praise net returns and the first address result from the first basic POI information that the GIS platform returns, the 4th sub-similarity can be determined according to geographical knowledge in the geographical knowledge storehouse.First address in the first basic POI information that the GIS platform returns is " No. 209, Beijing Dongzhimennei Dajie ", second address from the second basic POI information that the public praise net returns is " No. 209, Beijing Dongzhimennei Dajie ", can determine that the 4th sub-similarity between these two addresses is 1.
Judge that whether these two the 4th sub-similarities are more than or equal to second threshold value.Suppose that second threshold value equals 0.9.
According to the description of preamble as can be seen, these two the 4th sub-similarities are all greater than second threshold value.Can determine, from the comment net return the second basic POI information and the first basic POI information returned from the GIS platform between similarity and the similarity between the second basic POI information of returning from the public praise net and the first basic POI that returns from the GIS platform all satisfy the similarity assessment standard.
The content of the POI information of table four, enhancing
From above-mentioned example as can be seen, the second basic POI information that satisfies the similarity assessment standard has two, can select the POI information that the comparatively suitable side information and the first basic POI information are formed enhancing by further screening so.
Step 206 specifically can comprise: if more than or equal to the quantity of the 4th sub-similarity of second threshold value greater than two, then judge each more than or equal to the quality of data of the second basic POI information of the 4th sub-similarity correspondence of second threshold value whether more than or equal to the 3rd threshold value; The quality of data is formed the POI information that strengthens more than or equal to the 3rd threshold value, the 4th corresponding sub-similarity more than or equal to the side information and the first basic POI information of the second basic POI information correspondence of second threshold value.
The quality of data can be determined according to data recall rate and accuracy rate.Recall rate is meant the ratio of information all in the information and date storehouse of the query requests that satisfies the user that finally sends to the user.Accuracy rate is meant the ratio of the information and the information that all are queried to of the query requests that satisfies the user that finally sends to the user.With public praise net and comment net is example, can comprehensively judge the recall rate of public praise net and comment net and the quality of data that precision ratio obtains the public praise net respectively.Perhaps, can carry out sampling analysis, obtain the quality of data of each VSE system each VSE system.
Description according to preamble, first similarity between the first basic POI information of returning from the comment second basic POI information returned of net with from the GIS platform is greater than first threshold and greater than second threshold value, second similarity between the second basic POI information of returning from the public praise net and first essential information returned from the GIS platform is greater than first threshold and greater than second threshold value, so, can further judge comment net and public praise net the quality of data whether greater than the 3rd threshold value.The 3rd threshold value can be the value of a data quality, can set according to actual conditions.
Suppose the quality of data that the quality of data of public praise net comments on net greater than the 3rd threshold value less than the 3rd threshold value, the side information of the second basic POI information correspondence that the public praise net can be returned so and the first basic POI information are formed.
As can be seen, from the side information that the public praise net returns, " specialty " and " tag attributes " these two contents are all in the POI information that strengthens from table four.
For the information of dynamic change, for example contents such as " discounts " can be judged according to the source and the timestamp of data, more new data.
The first basic POI information of returning from the GIS platform and from the second basic POI information that comment net and public praise net return except can comprising title result, contact method result and address result, the multinomial content that can also comprise other, under the situation of the numerous contents that basic POI information comprises, need calculate the similarity of every content in the first basic POI information and the second basic POI information respectively, calculated amount is very big.Can be after getting access to the first basic POI information and the second basic POI information, every content in the first basic POI information and the second basic POI information is sorted, take out the every content of ordering respectively in preceding n position, the similarity of every content of n position before calculating, thus reduce calculated amount.N is a natural number, and for example, n can be 10.
Perhaps, also can after get access to the first basic POI information and the second basic POI information, the every content in the first basic POI information and the second basic POI information be carried out clustering processing, thereby reduce calculated amount.
For example, the second basic POI information cluster to from each VSE system specifically can be: pre-set classification, address classes, contact method classification, longitude and latitude classification etc. can be set.With the address classes is example, can be divided into various classifications according to province, city, district, street.Little fertile sheep restaurant with Beijing is an example, if divide classification according to the district, can be divided into these several classifications of Xicheng District, Chongwen District, Xuanwu District and Dongcheng District.
After getting access to the first basic POI information and the second basic POI information, can judge whether the first basic POI information belongs to identical classification with the second basic POI information from each VSE system from GIS.As can be seen, from the first basic POI information that the GIS platform returns, the address is " No. 209, Beijing Dongzhimennei Dajie " from table one, and the first basic POI information belongs to this classification of Dongcheng District.As can be seen, from the second basic POI information that the public praise net returns, the address is " No. 209, Beijing Dongzhimennei Dajie " from table two, and this second basic POI information belongs to this classification of Dongcheng District.As can be seen, from the second basic POI information returned of comment net, the address is No. 209, a Dongcheng District Dongzhimennei Dajie " (side street in the Near East) " from table three, and this second basic POI information also belongs to this classification of Dongcheng District.So, can determine that the first basic POI information belongs to identical classification with the second basic POI information of returning from two VSE systems, can calculate similarity according to the method that provides previously.
Under situation about having, the first basic POI information may belong to different classifications with the second basic POI information, like this, just can reduce the calculated amount that similarity is calculated.
Among the embodiment as shown in Figure 2, after obtaining the POI information of enhancing, can also comprise step 207, the POI information stores that strengthens in the POI information bank, and is offered the user to the POI information that strengthens.So just can form a POI information and form the POI information bank by enhancing.
From table four, as can be seen, some contents are arranged in the POI information of the enhancing of formation for empty, for example, contents such as " comment ", " discount ".Along with increasing of VSE system, these contents can be replenished complete.
If follow-up receive once more with step 201 in identical query requests, then:
From the POI information bank, inquire about the POI information that strengthens, and query requests is sent to the VSE system;
Judge whether the every content in the information that described VSE system returns is identical with the POI information of enhancing, if different, then upgrades the POI information of the described enhancing in the POI information bank, and the POI information that the enhancing after the renewal is provided is to the user; If identical, then the POI information of the described enhancing that will inquire offers the user.
Be illustrated in figure 3 as the process flow diagram of POI information providing method embodiment three of the present invention, this embodiment three also comprises on the basis of as shown in Figure 2 embodiment:
Step 208, POI information provider unit receive query requests, and this query requests is identical with query requests in the step 201.
The POI information providing method that the embodiment of the invention provides, after receiving query requests, send query requests to GIS platform and VSE system, second basic POI information and the side information that first basic POI information that reception GIS platform returns and the 2nd VSE system return, the side information of the second basic POI information correspondence that satisfies the similarity assessment standard and the first basic POI information are formed the POI information that strengthens, the POI information of this enhancing is offered the user.The POI information that strengthens is the combination of the side information returned of first essential information and VSE system, and the information that the VSE system returns is the current information of obtaining, that is to say that the information that the VSE system returns is up-to-date, the problem that the POI information that so just can overcome provides in the prior art can't upgrade in time after the web page contents of VSE system changes.
In addition, in the POI information bank,, can from the POI information bank, search the POI information of enhancing to the POI information stores of the enhancing that forms for the follow-up query requests that receives.And, the POI information that inquires in follow-up POI information that receives the enhancing that forms after the query requests and the POI information bank relatively, if the two difference, data after then comparatively leaning on timestamp are replaced the POI information of the enhancing in the POI information bank, thereby the POI information in the POI information bank that can upgrade in time makes that the POI information that offers the user is up-to-date all the time.
Be illustrated in figure 4 as the structural representation of POI information provider unit embodiment of the present invention, this POI information provider unit 1 comprises: first receiver module 11, sending module 12, second receiver module 13, computing module 14, evaluation module 15 and processing module 16.First receiver module 11 is used to receive query requests.Sending module 12 is connected with first receiver module 11, is used to send query requests that first receiver module 11 receives to GIS platform and VSE system.Second receiver module 13 is used to receive the information that the first basic POI information that the GIS platform returns and VSE system return, and the information that the VSE system returns comprises second basic POI information and the side information.Computing module 14 is connected with second receiver module 13, is used to calculate the similarity between the second basic POI information that the first basic POI information that GIS platform that second receiver module 13 receives returns and VSE system return.Evaluation module 15 is connected with computing module 14, is used for the similarity that evaluates calculation module 14 calculates.Processing module 16 is connected with second receiver module 13 with evaluation module 15 respectively, be used for the side information of the second basic POI information correspondence of assessing, satisfy the similarity assessment standard through evaluation module 15 and the first basic POI information are formed the POI information that strengthens, the POI information that strengthens is offered the user.
Wherein computing module 14 can comprise first sub-computing module 141, second sub-computing module the 142, the 3rd sub-computing module 143 and the comprehensive similarity computing module 144.The first sub-computing module 141 is connected with second receiver module 13, is used for calculating first title result of the first basic POI information that the GIS platform returns and the first sub-similarity between the second title result from the second basic POI information that the VSE system returns.The second sub-computing module 142 is connected with second receiver module 13, is used for calculating first contact method result of the first basic POI information that the GIS platform returns and the second sub-similarity between the second contact method result from the second basic POI information that the VSE system returns.The 3rd sub-computing module 143 is connected with second receiver module 13, is used for calculating first longitude and latitude result of the first basic POI information that the GIS platform returns and the 3rd sub-similarity between the second longitude and latitude result from the second basic POI information that the VSE system returns.Comprehensive similarity computing module 144 is connected with evaluation module 15 with first sub-computing module 141, second sub-computing module the 142, the 3rd sub-computing module 143 respectively, the 3rd sub-similarity that the first sub-similarity that is used for the first sub-computing module 141 is calculated, the second sub-similarity that the second sub-computing module 142 calculates and the 3rd sub-computing module 143 calculate is weighted, and calculates the comprehensive similarity of each sub-similarity.The comprehensive similarity of calculating sends to evaluation module 15, carries out similarity assessment by evaluation module 15.
Wherein, the first sub-computing module 141 specifically can be used to calculate from the first title results change to the number of characters that the second title result need change, and calculates the described first sub-similarity;
The second sub-computing module 142 specifically can be used to calculate the characters matched number between the first contact method result and the second contact method result, calculates the second sub-similarity between the described first contact method result and the second contact method result;
The 3rd sub-computing module 143 can be used to specifically judge that the first longitude and latitude result and the second longitude and latitude result are whether in same predeterminable area, if in same predeterminable area, the 3rd sub-similarity between the then described first longitude and latitude result and the second longitude and latitude result is 1; If not in same predeterminable area, the 3rd sub-similarity between the then described first longitude and latitude result and the second longitude and latitude result is 0.
Evaluation module 15 specifically can be used for quantity in the VSE system greater than one situation under, whether assess similarity between the second basic POI information that the first basic POI information that described GIS platform that second receiver module receives returns and each VSE system return more than or equal to first threshold.
In one embodiment, evaluation module 15 can also be connected with second receiver module 13, is used for calculating the 4th sub-similarity between the second address result in the first address result of the first basic POI information that the GIS platform returns and the second basic POI information that each VSE system returns; Judgement more than or equal to the 4th sub-similarity of each second basic POI information correspondence of first threshold whether more than or equal to second threshold value; Processing module 16 specifically can be used for the 4th sub-similarity is formed the POI information that strengthens more than or equal to the side information and the first basic POI information of the second basic POI information correspondence of second threshold value.
Processing module 16 can also be used for more than or equal to the quantity of the 4th sub-similarity of second threshold value greater than two situation under, judge each more than or equal to the quality of data of the second basic POI information of the 4th sub-similarity correspondence of second threshold value whether more than or equal to the 3rd threshold value; The quality of data is formed the POI information that strengthens more than or equal to the 3rd threshold value, the 4th corresponding sub-similarity more than or equal to the side information and the first basic POI information of the second basic POI information correspondence of second threshold value.
Can also comprise judge module 17 at as shown in Figure 4 POI information provider unit, be connected with computing module 14 with second receiver module 13, after being used to judge the information that the first basic POI information that GIS platform that second receiver module 13 receives returns and VSE system return, judge the affiliated classification of information that the first basic POI information and VSE system return; Computing module 14 specifically can be used for the second basic POI information returned for the first basic POI information that belongs to identical category and VSE system, obtains the similarity between the second basic POI information that the first basic POI information that the GIS platform returns and VSE system return.
POI information provider unit as shown in Figure 4 can also comprise POI information bank 18, is connected with processing module 16, is used for the POI information of the enhancing of stores processor module 16 formation.
Be illustrated in figure 5 as the structural representation of POI information providing system embodiment of the present invention, this system comprises the POI information provider unit 1 shown in aforementioned each embodiment, also comprise GIS platform 2 at least one VSE system 3, POI information provider unit 1 carries out data transmission with GIS platform 2 and at least one VSE system 3 respectively.
POI information provider unit and system that the embodiment of the invention provides, after first receiver module receives query requests, sending module sends query requests to GIS platform and VSE system, second basic POI information and the side information that first basic POI information that second receiver module reception GIS platform returns and the 2nd VSE system return, evaluation module carries out similarity assessment, processing module is formed the POI information that strengthens to the side information of the second basic POI information correspondence that satisfies the similarity assessment standard and the first basic POI information, and the POI information of this enhancing is offered the user.The POI information that strengthens is the combination of the side information returned of first essential information and VSE system, and the information that the VSE system returns is the current information of obtaining, that is to say that the information that the VSE system returns is up-to-date, the problem that the POI information that so just can overcome provides in the prior art can't upgrade in time after the web page contents of VSE system changes.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of programmed instruction, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (12)
1. a point of interest POI information providing method is characterized in that, comprising:
Receive query requests;
Send described query requests to Geographic Information System GIS platform and vertical search engine VSE system;
Receive the information that the first basic point of interest POI information that Geographic Information System GIS platform returns and vertical search engine VSE system return, the information that described vertical search engine VSE system returns comprises second basic point of interest POI information and the side information;
Similarity between the second basic point of interest POI information that first basic point of interest POI information that calculating Geographic Information System GIS platform returns and vertical search engine VSE system return;
Assess described similarity;
The side information of the second basic point of interest POI information correspondence that satisfies the similarity assessment standard and the described first basic point of interest POI information are formed the point of interest POI information that strengthens, the point of interest POI information that strengthens is offered the user.
2. method according to claim 1 is characterized in that described query requests comprises at least one key word;
The described first basic point of interest POI information comprises at least one first result;
The described second basic point of interest POI information comprises at least one second result.
3. method according to claim 2 is characterized in that, calculates the similarity between the second basic POI information that the first basic point of interest POI information that Geographic Information System GIS platform returns and described vertical search engine VSE system return, and comprising:
Calculate the sub-similarity between each second result in the second basic point of interest POI information that each first result in the first basic point of interest POI information that Geographic Information System GIS platform returns and described vertical search engine VSE system return, calculate the comprehensive similarity of each sub-similarity.
4. method according to claim 3 is characterized in that, the quantity of described vertical search engine VSE system is at least one.
5. method according to claim 4 is characterized in that, described at least one first result comprises the first title result, the first contact method result and the first longitude and latitude result; Described at least one second result comprises the second title result, the second contact method result and the second longitude and latitude result;
Calculate the sub-similarity between each second result in the second basic point of interest POI information that each first result in the first basic point of interest POI information that Geographic Information System GIS platform returns and described vertical search engine VSE system return, comprising:
Calculate the first sub-similarity between the first title result and the second title result;
Calculate the second sub-similarity between the first contact method result and the second contact method result;
Calculate the 3rd sub-similarity between the first longitude and latitude result and the second longitude and latitude result;
Calculate the comprehensive similarity of each sub-similarity, comprising:
The described first sub-similarity, the second sub-similarity and the 3rd sub-similarity are weighted, calculate the comprehensive similarity of each sub-similarity, described comprehensive similarity is the sub-similarity between each second result in the second basic point of interest POI information returned of each first result in the first basic point of interest POI information returned of described Geographic Information System GIS platform and described vertical search engine VSE system.
6. method according to claim 5, it is characterized in that, calculate the first sub-similarity between the first title result and the second title result, comprising: calculating to the number of characters that the second title result need change, is calculated the described first sub-similarity from the first title results change.
7. method according to claim 5, it is characterized in that, calculate the second sub-similarity between the first contact method result and the second contact method result, comprise: calculate the characters matched number between the first contact method result and the second contact method result, calculate the second sub-similarity between the described first contact method result and the second contact method result.
8. method according to claim 5, it is characterized in that, calculate the 3rd sub-similarity between the first longitude and latitude result and the second longitude and latitude result, comprise: judge that the first longitude and latitude result and the second longitude and latitude result are whether in same predeterminable area, if in same predeterminable area, the 3rd sub-similarity between the then described first longitude and latitude result and the second longitude and latitude result is 1; If not in same predeterminable area, the 3rd sub-similarity between the then described first longitude and latitude result and the second longitude and latitude result is 0.
9. according to the described method of arbitrary claim among the claim 6-8, it is characterized in that, assess described similarity, comprising:
If whether the quantity of described vertical search engine VSE system, then assesses similarity between the second basic point of interest POI information that the first basic point of interest POI information that Geographic Information System GIS platform returns and each vertical search engine VSE system return greater than one more than or equal to first threshold.
10. method according to claim 9 is characterized in that, the described first basic point of interest POI information also comprises the first address result, and the second basic point of interest POI information also comprises the second address result;
Assess described similarity, also comprise: the 4th sub-similarity of calculating the first address result and the second address result; Judgement more than or equal to the 4th sub-similarity of each second basic point of interest POI information correspondence of described first threshold whether more than or equal to second threshold value;
The side information of the second basic point of interest POI information correspondence that satisfies the similarity assessment standard and the described first basic point of interest POI information are formed the point of interest POI information that strengthens, comprising: the 4th sub-similarity is formed the point of interest POI information that strengthens more than or equal to the side information and the described first basic point of interest POI information of the second basic point of interest POI information correspondence of second threshold value.
11. method according to claim 10, it is characterized in that, the 4th sub-similarity is formed the point of interest POI information that strengthens more than or equal to the side information and the described first basic point of interest POI information of the second basic point of interest POI information correspondence of second threshold value, comprising:
If more than or equal to the quantity of the 4th sub-similarity of second threshold value greater than two, then judge each more than or equal to the quality of data of the second basic point of interest POI information of the 4th sub-similarity correspondence of second threshold value whether more than or equal to the 3rd threshold value;
The quality of data is formed the point of interest POI information that strengthens more than or equal to the 3rd threshold value, the 4th corresponding sub-similarity more than or equal to the side information and the described first basic point of interest POI information of the second basic point of interest POI information correspondence of second threshold value.
12. a point of interest POI information provider unit is characterized in that, comprising:
First receiver module is used to receive query requests;
Sending module is used to send query requests that described first receiver module receives to Geographic Information System GIS platform and vertical search engine VSE system;
Second receiver module, be used to receive the information that the first basic point of interest POI information that Geographic Information System GIS platform returns and vertical search engine VSE system return, the information that described vertical search engine VSE system returns comprises second basic point of interest POI information and the side information;
Computing module is used to calculate the similarity between the second basic point of interest POI information that the first basic point of interest POI information that described Geographic Information System GIS platform that second receiver module receives returns and vertical search engine VSE system return;
Evaluation module is used to assess the similarity that described acquisition module obtains;
Processing module, be used for the side information of the second basic point of interest POI information correspondence of assessing, satisfy the similarity assessment standard through described evaluation module and the described first basic point of interest POI information are formed the point of interest POI information that strengthens, the point of interest POI information that strengthens is offered the user.
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