CN102752854B - Method and server for updating geographic location information - Google Patents
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- CN102752854B CN102752854B CN201210237838.3A CN201210237838A CN102752854B CN 102752854 B CN102752854 B CN 102752854B CN 201210237838 A CN201210237838 A CN 201210237838A CN 102752854 B CN102752854 B CN 102752854B
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Abstract
The invention discloses a method and a server for updating geographic location information, and belongs to the field of positioning. The method comprises the following steps of: receiving positioning information uploaded by a terminal; acquiring an address sequence set corresponding to the positioning information, and transmitting the address sequence set to the terminal; receiving an address selected by a user according to the address sequence set from the terminal; and updating an area coverage of the address according to the address and all positioning information positioned to the address, so that the address can be accurately positioned according to the positioning information during subsequent positioning. The area coverage of the address in a map is continuously optimized and updated according to the positioning information of the user and a specific address selected by the user according to the positioning information, so that the problem of lower user positioning accuracy caused by problems of the positioning accuracy and errors is gradually solved.
Description
Technical field
The present invention relates to positioning field, particularly a kind of method and server that upgrades geographical location information.
Background technology
Under the background developing rapidly at mobile terminal, the increasing routine work for people of LBS (Location Based Service, location-based service) and life.LBS has merged the multiple technologies such as GPS (Global Positioning System, global positioning system) location, mobile communication, navigation, for user provides and an integrated application business of locus related service.
Prior art is (as GSM net by the wireless communication networks of telecommunications mobile operator, CDMA net) or outside locate mode (as GPS (Global Position System)) obtain the positional information (latitude and longitude information) of mobile phone users, be sent to server, server is at GIS (Geographic Information System, GIS-Geographic Information System) under the support of platform, inquire some specified places within the scope of current location information, for example: cinema, the location information that dining room etc. are concrete, then return to mobile terminal and wait for user's selecting concrete location information, afterwards according to the business operation that carries out subsequent applications behind user-selected place of getting.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem:
When user completes behind location; due to positioning precision and error problem; often can depart from the real position of user; and the concrete address on map is fixing point in prior art; therefore cause server to locate the latitude and longitude information obtaining according to user terminal; the specific address of choosing for user also can cause being positioned to the real position of distance users and have because of error the address of certain deviation; user need to readjust and select concrete address just can carry out follow-up location-based service, therefore causes poor user experience.
Summary of the invention
In order to improve the precision of location, the embodiment of the present invention provides a kind of method and server that upgrades geographical location information.Described technical scheme is as follows:
On the one hand, provide a kind of method of upgrading geographical location information, described method comprises:
The locating information that receiving terminal is uploaded;
Obtain address sequence set corresponding to described locating information, and described address sequence set is sent to described terminal;
Receive the address that user that described terminal uploads chooses according to described address sequence set;
According to described address and navigate to all locating information of described address, the regional extent of described address is upgraded, make to navigate to more accurately described address according to locating information in the time of follow-up location;
Wherein, described in obtain address sequence set corresponding to described locating information, and described address sequence set is returned to described terminal, comprising:
According to the latitude and longitude information in described locating information and locate mode information, determine that described terminal is mapped in the regional extent in map;
Obtain the address set in described regional extent;
According to the weighted value of each address in described address set, sorted in address, calculated address arrangement set;
Described address sequence set is sent to described terminal.
Wherein, described in obtain the address set in described regional extent after, described method also comprises:
Judge whether the address in described address set belongs to the subaddressing of high-level address, if described high-level address is added in described address set.
Wherein, described according to described address and navigate to all locating information of described address, the regional extent of described address is upgraded, make to navigate to more accurately described address according to locating information in the time of follow-up location, comprising:
The described address that this locating information of described terminal is chosen with user is carried out associated;
Accumulate the location number of times of described address;
In the time that described location number of times reaches predetermined threshold value, according to all locating information associated with described address, upgrade the regional extent of described address, make to navigate to more accurately described address according to locating information in the time of follow-up location.
On the one hand, provide a kind of server that upgrades geographical location information, described server comprises:
The first receiver module, the locating information of uploading for receiving terminal;
Acquisition module, for obtaining address sequence set corresponding to described locating information, and sends to described terminal by described address sequence set;
The second receiver module, the address of choosing according to described address sequence set for receiving user that described terminal uploads;
Update module, for according to described address and navigate to all locating information of described address, upgrades the regional extent of described address, makes to navigate to more accurately described address according to locating information in the time of follow-up location;
Wherein, described acquisition module, comprising:
Scope determining unit, for according to the latitude and longitude information of described locating information and locate mode information, determines that described terminal is mapped in the regional extent in map;
Acquiring unit, for obtaining the address set of described regional extent;
Sequencing unit, for according to the weighted value of the each address of described address set, sorts to address, calculated address arrangement set;
Transmitting element, for sending to described terminal by described address sequence set.
Wherein, described server also comprises:
Judge module, for judging whether the address of described address set belongs to the subaddressing of high-level address, if described high-level address is added in described address set.
Wherein, described update module, comprising:
Associative cell, carries out associated for the described address that this locating information of described terminal is chosen with user;
Number of times accumulated unit, for accumulating the location number of times of described address;
Updating block, in the time that described location number of times reaches predetermined threshold value, according to all locating information associated with described address, upgrades the regional extent of described address, makes to navigate to more accurately described address according to locating information in the time of follow-up location.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is: by the specific address of constantly choosing according to locating information according to user's locating information and user, regional extent to address in map is optimized renewal, has improved gradually the low problem of user's locating accuracy causing due to positioning precision and error problem.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic flow sheet of the method for the renewal geographical location information that provides in the embodiment of the present invention 1;
Fig. 2 is the schematic flow sheet of the method for the renewal geographical location information that provides in the embodiment of the present invention 2;
Fig. 3 is the structural representation of the server of the renewal geographical location information that provides in the embodiment of the present invention 1.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment 1
Referring to Fig. 1, the embodiment of the present invention has proposed a kind of method of upgrading geographical location information, comprising:
101: the locating information that receiving terminal is uploaded;
102: obtain address sequence set corresponding to described locating information, and described address sequence set is sent to described terminal;
103: receive the address that user that described terminal uploads chooses according to described address sequence set;
104: according to described address and navigate to all locating information of described address, the regional extent of described address is upgraded, made to navigate to more accurately described address according to locating information in the time of follow-up location.
The embodiment of the present invention is by the specific address of constantly choosing according to locating information according to user's locating information and user, regional extent to address in map is optimized renewal, has improved gradually the low problem of user's locating accuracy causing due to positioning precision and error problem.
Embodiment 2
Referring to Fig. 2, the embodiment of the present invention has proposed a kind of method of upgrading geographical location information, comprising:
201: the locating information that server receiving terminal is uploaded.
After terminal positions, can generate one group of locating information.Locating information at least comprises that the model identification model of the current latitude and longitude information (lat, lon) of terminal, current locate mode information pos_type, terminal forms a set, and this set is reported to server by terminal.Locate mode information pos_type is the mark of which kind of locate mode of terminal employing, for example can position by the GPS module of terminal, can pass through AGPS (Assisted Global Positioning System, auxiliary global satellite positioning system) position, locate mode does not limit at this.
Server receives after each user's locating information, is kept in the user's position the record database in server, and the corresponding record of one-time positioning in this database, user's position the record database comprises following field:
1) uid: user ID is by string representation;
2) location_point: the latitude and longitude coordinates dot information (lat, lon) of user location;
3) address: the address of user location, by string representation;
4) model: the intelligent mobile terminal type that user uses;
5) pos_type: by the locate mode of integer representation, more accurate locate mode numerical value is larger.
Further, also preserved a user and locate learning database in server, this database comprises following field:
1) address: address, by string representation;
2) central_point: central point, is represented by latitude and longitude information (lat, lon);
3) region: regional extent, based on a large number of users elements of a fix point and build regional extent coordinate points, represented by (max_lat, max_lon, min_lat, min_lon);
4) pos_cnt: location number of times, by integer representation.
This user locates in learning database, a corresponding record in address, be used for preserving each address lastest imformation, comprising central point, and regional extent corresponding to this address, formed by latitude and longitude information maximum in a region and minimum latitude and longitude information, this regional extent can be circular or other regular figures, the embodiment of the present invention is taking square as example, if when circular, regional extent need identify with radius; Also comprise the location number of times to this address, its initial value is 1.
202: server obtains address sequence set corresponding to described locating information, and described address sequence set is sent to described terminal.
Concrete, step 202 can be specially:
2021: according to the latitude and longitude information in described locating information and locate mode information, determine that described terminal is mapped in the regional extent in map;
Server is according to the locating information of terminal to report, can be mapped to a regional extent, be Mapping A, this regional extent be one with (lat, lon) square of point centered by, the foursquare length of side is relevant with locate mode information pos_type, and square corresponding to locate mode that precision is higher is less, for example, in the time that locate mode information pos_type is GPS location, the length of side is 200m; In the time that locate mode is architecture, the length of side is 500m.Preferably, the square length of side can also be weak associated with terminal models model, the precision that the terminal of different model obtains by same locate mode is not necessarily identical, can further expand or dwindle according to terminal models the foursquare length of side of point centered by (lat, lon).
The regional extent of Mapping A can be understood as under a rectangular coordinate system with (lat, lon) point centered by, with these foursquare four summits, maximum longitude max_lat, maximum latitude max_lon, minimum longitude min_lat, minimum latitude min_lon form.Therefore the data in the set that Mapping A forms are: { max_lat, max_lon, min_lat, min_lon, pos_type, model}.
2022: obtain the address set in described regional extent.
In the set Mapping A of each group locating information mapping, regional extent wherein can correspond to one group of location information in real geographic range.For example can comprise the location informations such as building, park, school, hospital.Therefore server gets after the locating information of terminal, obtains the location information in this geographic range according to the geographic range in Mapping A.Wherein, each location information comprises: the title address in each place, the weighted value weight that this place is corresponding, and the position offset parameter diff in this place.Wherein offset parameter diff in position is the distance between the concrete address in the reflection latitude and longitude information at user place and the regional extent of mapping, and this distance can calculate according to the latitude and longitude information of the latitude and longitude information in user's locating information and specific address.
Concrete, in store Fundamental Geographic Information Database in server, Fundamental Geographic Information Database is provided by Map Services provider, preserve basic address information, except street and building information, also comprise the latitude and longitude information of detailed address (as cinema, coffee-house etc.) and central point thereof.Its Database field comprises:
1) address: address, by string representation;
2) central_point: central point, is represented by latitude and longitude information (lat, lon).
According to behind user's a region of locating information mapping, according to the scope (max_lat, max_lon, min_lat, min_lon) that belongs to this region, obtain central point and belong to each address in this scope.
For example: user Wan Tong center positions operation, positioning result is (lat1, lon1), and there is certain deviation at Li Wantong center.But user expects to return results Shi Wantong center, and therefore (lat1, lon1) is mapped to a geographic range by location-server, and this geographic range has four addresses (Wan Tong center, outwardly SOHO, the new city world and The Place).The central point of each address is diff apart from the distance of anchor point (lat1, lon1).
2023: judge whether the address in described address set belongs to the subaddressing of high-level address, if described high-level address is added in described address set.
Getting after address set, the address in address set is likely the subaddressing of high-level address.For example user is in the Meridian Gate location of the Forbidden City, and the central point of the Forbidden City not in user location (lat, lon) in the square area of mapping, but Meridian Gate is the subaddressing that belongs to high-level address the Forbidden City, therefore the Forbidden City can be returned to user as address.Therefore can also judge whether address wherein belongs to a high-level address getting after address set.
2024: according to the weighted value of each address in described address set, sorted in address, calculated address arrangement set.
Weight weight is used for address set to sort, and consider distance and popular degree.Weight is dynamic change, need to calculate at every turn.The weight of i address is:
Weight is the weighted sum of location number of times and range deviation diff, but because two factors are not same dimensions, therefore does normalized.By certain address user locate in learning database corresponding pos_cnt and this address at user's locating information and its diff recording truly in server respectively divided by the maximum in the list of return address.
The setting of the parameter alpha of weighted sum is relevant with strategy, has determined that user locates number of times and the shared proportion of distance.Generally locate address temperature that number of times reflected as main taking user, α can value between 0.7～0.8.
2025: described address sequence set is sent to described terminal.
Return to terminal according to the tactic address sequence set of weight, in this set, packet contains: { (address, diff, weight) }.
203: receive the address that user that described terminal uploads chooses according to described address sequence set.
204: according to described address and navigate to all locating information of described address, the regional extent of described address is upgraded, made to navigate to more accurately described address according to locating information in the time of follow-up location.
Concrete, step 204 can be:
2041: this locating information of described terminal is carried out associated with described address information.
In the address information that the user that terminal is uploaded chooses, at least comprise address address.When the address at the user place of choosing in the user base area point sequence set of obtaining each time, by the latitude and longitude information (lat in this user's locating information, lon) carry out associated with this address address, in user's position the record database by the latitude and longitude information in user's locating information and in user's position the record database or Fundamental Geographic Information Database corresponding address carry out associated, certain field in associated database and database not being limited.
Initial certain address may only comprise the latitude and longitude information of a central point, in the process constantly positioning user, feed back gradually the user's corresponding with this address locating information, due to positioning precision problem, the latitude and longitude information in locating information corresponding to this address can be formed as a regional extent gradually.
2042: the location number of times of accumulating described address.
The address that user is chosen is located pos_cnt parameter corresponding in learning database user and is added up and preserve.
2043: in the time that described location number of times reaches predetermined threshold value, according to all locating information associated with described address, upgrade the regional extent of described address, make to navigate to more accurately described address according to locating information in the time of follow-up location.
To calculate redundancy in order reducing, to reduce server load, regional extent does not need the feedback of carrying out while at every turn having user to locate all to upgrade.Therefore, set in advance the location number of times of accumulation, and while reaching certain threshold value according to this number of times, carry out the operation of regional extent corresponding to scheduler, upgrade user and locate regional extent region (max_lat, the max_lon in learning database, min_lat, min_lon).Choose the part locating information associated with this address, wherein part locating information is the percentage that at least covers this address associated locating information sum in user's position the record database, this percentage can be default value, and the mode of choosing in locating information corresponding to this percentage is not made restriction at this.
Choose maximum latitude and longitude information in all locating information of selecting and minimum latitude and longitude information and determine the regional extent of this address, and preserve in database, this region is a minimum square that covers certain proportion anchor point, when user afterwards locates, server can expand selection range in the time choosing the regional extent of user's locating information mapping, chooses more accurately the address that in-scope is corresponding.
The embodiment of the present invention is by the specific address of constantly choosing according to locating information according to user's locating information and user, regional extent to address in map is optimized renewal, has improved gradually the low problem of user's locating accuracy causing due to positioning precision and error problem.
Embodiment 3
Referring to Fig. 3, the embodiment of the present invention has proposed a kind of server that upgrades geographical location information, comprising:
The first receiver module 301, the locating information of uploading for receiving terminal;
Acquisition module 302, for obtaining address sequence set corresponding to described locating information, and sends to described terminal by described address sequence set;
The second receiver module 303, the address of choosing according to described address sequence set for receiving user that described terminal uploads;
Update module 304, for according to described address and navigate to all locating information of described address, upgrades the regional extent of described address, makes to navigate to more accurately described address according to locating information in the time of follow-up location.
In embodiment, described acquisition module 302, comprising:
Scope determining unit 3021, for according to the latitude and longitude information of described locating information and locate mode information, determines that described terminal is mapped in the regional extent in map;
Acquiring unit 3022, for obtaining the address set of described regional extent;
Sequencing unit 3023, for according to the weighted value of the each address of described address set, sorts to address, calculated address arrangement set;
Transmitting element 3024, for sending to described terminal by described address sequence set.
Wherein, described acquisition module 302 also comprises:
Judging unit 3025, for judging whether the address of described address set belongs to the subaddressing of high-level address, if described high-level address is added in described address set.
Wherein, described update module 304, comprising:
Associative cell 3041, carries out associated for the described address that this locating information of described terminal is chosen with user;
Number of times accumulated unit 3042, for accumulating the location number of times of described address;
Updating block 3043, in the time that described location number of times reaches predetermined threshold value, according to all locating information associated with described address, upgrades the regional extent of described address, makes to navigate to more accurately described address according to locating information in the time of follow-up location.
The embodiment of the present invention is by the specific address of constantly choosing according to locating information according to user's locating information and user, regional extent to address in map is optimized renewal, has improved gradually the low problem of user's locating accuracy causing due to positioning precision and error problem.
One of ordinary skill in the art will appreciate that all or part of step that realizes above-described embodiment can complete by hardware, also can carry out the hardware that instruction is relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a method of upgrading geographical location information, is characterized in that, described method comprises:
The locating information that receiving terminal is uploaded;
Obtain address sequence set corresponding to described locating information, and described address sequence set is sent to described terminal;
Receive the address that user that described terminal uploads chooses according to described address sequence set;
According to described address and navigate to all locating information of described address, the regional extent of described address is upgraded, make to navigate to more accurately described address according to locating information in the time of follow-up location;
Wherein, described in obtain address sequence set corresponding to described locating information, and described address sequence set is returned to described terminal, comprising:
According to the latitude and longitude information in described locating information and locate mode information, determine that described terminal is mapped in the regional extent in map;
Obtain the address set in described regional extent;
According to the weighted value of each address in described address set, sorted in address, calculated address arrangement set;
Described address sequence set is sent to described terminal.
2. method according to claim 1, is characterized in that, described in obtain the address set in described regional extent after, described method also comprises:
Judge whether the address in described address set belongs to the subaddressing of high-level address, if described high-level address is added in described address set.
3. method according to claim 1, it is characterized in that, described according to described address and navigate to all locating information of described address, the regional extent of described address is upgraded, make to navigate to more accurately described address according to locating information in the time of follow-up location, comprising:
The described address that this locating information of described terminal is chosen with user is carried out associated;
Accumulate the location number of times of described address;
In the time that described location number of times reaches predetermined threshold value, according to all locating information associated with described address, upgrade the regional extent of described address, make to navigate to more accurately described address according to locating information in the time of follow-up location.
4. a server that upgrades geographical location information, is characterized in that, described server comprises:
The first receiver module, the locating information of uploading for receiving terminal;
Acquisition module, for obtaining address sequence set corresponding to described locating information, and sends to described terminal by described address sequence set;
The second receiver module, the address of choosing according to described address sequence set for receiving user that described terminal uploads;
Update module, for according to described address and navigate to all locating information of described address, upgrades the regional extent of described address, makes to navigate to more accurately described address according to locating information in the time of follow-up location;
Wherein, described acquisition module, comprising:
Scope determining unit, for according to the latitude and longitude information of described locating information and locate mode information, determines that described terminal is mapped in the regional extent in map;
Acquiring unit, for obtaining the address set of described regional extent;
Sequencing unit, for according to the weighted value of the each address of described address set, sorts to address, calculated address arrangement set;
Transmitting element, for sending to described terminal by described address sequence set.
5. server according to claim 4, is characterized in that, described acquisition module also comprises:
Judging unit, for judging whether the address of described address set belongs to the subaddressing of high-level address, if described high-level address is added in described address set.
6. server according to claim 4, is characterized in that, described update module, comprising:
Associative cell, carries out associated for the described address that this locating information of described terminal is chosen with user;
Number of times accumulated unit, for accumulating the location number of times of described address;
Updating block, in the time that described location number of times reaches predetermined threshold value, according to all locating information associated with described address, upgrades the regional extent of described address, makes to navigate to more accurately described address according to locating information in the time of follow-up location.
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| CN201210237838.3A CN102752854B (en) | 2012-07-09 | 2012-07-09 | Method and server for updating geographic location information |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103220376B (en) * | 2013-03-30 | 2014-07-16 | 清华大学 | Method for positioning IP (Internet Protocol) by position data of mobile terminal |
| CN103473043B (en) * | 2013-08-05 | 2017-11-03 | 百度在线网络技术（北京）有限公司 | The method and apparatus of the weight information of object in a kind of determination map |
| CN104915401B (en) * | 2015-05-29 | 2018-12-04 | 广州杰赛科技股份有限公司 | GIS information updating method and system |
| CN105718504A (en) * | 2015-12-26 | 2016-06-29 | 小米科技有限责任公司 | Method and device for determining positioning information corresponding to address information |
| WO2017161475A1 (en) * | 2016-03-21 | 2017-09-28 | 华为技术有限公司 | Method and device for generating electronic map, and method and device for planning route |
| CN107295047B (en) * | 2016-03-31 | 2020-10-16 | 阿里巴巴（中国）有限公司 | Map data updating method, device and system |
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