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Method and system for searching geographical information

A technology of geographic information and search methods, applied in the fields of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of fuzzy matching, geographical coordinates are far away, not meeting user retrieval requirements, etc., to achieve the effect of improving accuracy

Inactive Publication Date: 2009-01-21
BEIJING LINGTU SOFTWARE TECH CO LTD
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  • Summary
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AI Technical Summary

Problems solved by technology

[0003] At present, many companies at home and abroad have launched map search services, such as Google and Baidu, etc.; but most of these search engines are based on full-text retrieval technology, that is, they can only be searched in the database according to the text names entered by users. fuzzy matching, search for corresponding objects
For example, if the user enters the query word "Beijing Hailong Building", the search results include all the names of features in the database or the matching results of "Beijing" and "Hailong Building" in the specific address information, while Among the two results, the specific geographical location marked on the map is very far away from the real geographical coordinates of "Hailong Building", which obviously does not meet the user's search requirements; but because the address information contains the words "Hailong Building", so Appeared in the search results list and ranked first

Method used

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  • Method and system for searching geographical information
  • Method and system for searching geographical information

Examples

Experimental program
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Embodiment 1

[0047] refer to figure 1 , which shows Embodiment 1 of a geographic information search method according to the present invention, which may specifically include:

[0048] Step 101, receiving query request information;

[0049] Step 102, performing word segmentation on the query request information to obtain valid addresses and keywords;

[0050] The following is a brief introduction to Chinese word segmentation technology.

[0051] As we all know, English is based on words, and words are separated by spaces, while Chinese is based on words, and all the words in a sentence can be connected to describe a meaning. For example, the English sentence I am student, in Chinese: "I am a student". The computer can easily know that student is a word through the blank space, but it cannot easily understand that the combination of the words "learning" and "sheng" means a word. Segmenting Chinese character sequences into meaningful words is Chinese word segmentation. For example, I am ...

Embodiment 2

[0089] refer to figure 2 , which shows Embodiment 2 of the geographic information search method, which may specifically include:

[0090] Step 201, receiving query request information;

[0091] Step 202: Perform word segmentation on the query request information to obtain a valid address; preferably, use the preset address word segmentation database as a reference dictionary to perform word segmentation on the query request information to obtain a valid address; the address segmentation database stores There are multiple standard address entries;

[0092] Further, when the word segmentation result includes at least two address entries, it may also include: judging whether the two address entries before and after the word segmentation result conform to the preset parent-child level relationship, and if so, determine it as a valid address;

[0093] Step 203, querying the preset database to obtain the spatial geometry information of the effective address;

[0094] Step 204. D...

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Abstract

The invention provides a method and a system for searching geographic information. The method can comprise: receiving inquiry request information, segmenting the inquiry request information, obtaining an effective address and key words, inquiring a prearranged database, obtaining spatial geometric information of the effective address, determining spatial regions which need searching according to the spatial geometric information, searching according to the key words in the spatial regions which need searching, and outputting a searching result. The invention organically combines spatial index and full-text searching, and can effectively improve the accuracy and the rich degree of geographic information searching.

Description

technical field [0001] The invention relates to the field of information search, in particular to a search method and system for geographic information. Background technique [0002] With the popularization of the Internet and the rapid development of information technology, people rely more and more on various information, especially geographic information. According to statistics, more than 80% of people's activities are related to spatial location. Therefore, how to accurately and quickly find the information they need from the massive geographic information data has become an urgent problem to be solved. [0003] At present, many companies at home and abroad have launched map search services, such as Google and Baidu, etc.; but most of these search engines are based on full-text retrieval technology, that is, they can only be searched in the database according to the text names entered by users. In fuzzy matching, search for corresponding objects. For example, if the u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 张高峰陈文斌孙亚夫孙茳
Owner BEIJING LINGTU SOFTWARE TECH CO LTD
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