Method and device for processing map query request
A technology of query request and processing method, which is applied in the fields of electronic digital data processing, geographic information database, special data processing application, etc. It can solve problems such as difficulty in obtaining query results, achieve query performance improvement, increase recall rate, and enrich included content Effect
Active Publication Date: 2018-11-09
BEIJING BAIDU NETCOM SCI & TECH CO LTD
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Problems solved by technology
Compared with the query method of plain text matching, the query combined with spatial information is obviously more in line with the needs of users, but the realization of this method needs to rely on the completeness of the address database. If the user's query request contains Covered place names, then this part will be treated as general text, and it is still difficult to get query results that meet the requirements
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[0059] According to the prior art, if the user's map query request contains content with spatial meaning, and the map system can identify these content according to the gazetteer, then the search can be performed within the corresponding spatial range. For example, when a user searches for "Industrial and Commercial Bank of Haidian District", the system can identify "Haidian District" according to the gazetteer and locate the corresponding area on the map, and then further search for "Industrial and Commercial Bank of China" within this area.
[0060] If the user's query request contains a place name that is not covered in the gazetteer, for example, for the query request "Zhongguancun Industrial and Commercial Bank", the user's purpose may be to find the Industrial and Commercial Bank of China located in the "Zhongguancun" area, but there is no place name in the gazetteer If "Zhongguancun" is included, then "Zhongguancun" will still be treated as a general text. Only when the ...
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The invention discloses a method and a device for processing a map query request. The method for processing the map query request comprises the following steps of receiving the query request, dividing words of a query request text, and obtaining N word dividing units; utilizing previous i word dividing units to form a query substring; in the map data, querying the result matched with the text of the query substring; according to the position information of the query result, determining a position area corresponding to the query substring. By adopting the scheme, the name of the unknown location can be identified according to the position distribution of the query result, so the effect of an address dictionary on the query result is reduced, and the recall rate of the query result is improved.
Description
technical field [0001] The invention relates to the technical field of electronic maps, in particular to a map query request processing method and device. Background technique [0002] Electronic map, also known as digital map, is a map stored and queried digitally using computer technology. Utilizing the data processing capability of the computer, the electronic map can realize more rapid location information query, which is convenient for users to use. [0003] For the user's location query request, the most basic processing method is to directly search the content matching the text content in the map database according to the text entered by the user, such as points of interest, roads, and so on. This method is actually the same as ordinary text information retrieval, but it is not necessarily applicable to map query. For example, the query request entered by the user is "Industrial and Commercial Bank of Haidian District", and the purpose is to find the Industrial and C...
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IPC IPC(8): G06F17/30
CPCG06F16/29
Inventor 李扬
Owner BEIJING BAIDU NETCOM SCI & TECH CO LTD