Method and system for improving POI search in digital police service scene

Abstract

The invention provides a method and system for improving POI search in a digital police service scenario, and the method comprises the steps: obtaining user search information which comprises a query statement and an origin coordinate; introducing a police affair knowledge graph to perform word segmentation on the query statement to obtain search entries; taking the distance between the lexical items as a ranking factor, and carrying out POI search on the search entry by utilizing a search engine to obtain a search ranking result; and adjusting the search ranking result by utilizing the origin coordinates. According to the method, a word segmentation device is optimized, a result returned to a user can better conform to ranking cognition of people through the distance between lexical items, and a spatial distance factor with an original point coordinate is further added for searching of a POI geographic position, so that the spatial similarity between the search result and the search content is improved.

Description

technical field [0001] The present invention relates to the field of digital policing, in particular to a method and system for improving POI search in a digital policing scene. Background technique [0002] In the business scenario of digital policing, the entry and collection of a lot of information needs to be assisted by the corresponding POI (Point of Interest) information search to determine the location of the crime, the location of the suspect, and the driving route. Better users Experience can greatly improve the efficiency and accuracy of related input and collection. [0003] The previous POI search was based on full-text search. By indexing POI addresses, names and other text content, users can obtain results from the index database through search statements, such as figure 1 shown. [0004] The whole program is divided into two parts, index building and index search. Index building: Extract relevant POI content to information, such as name, address, etc. Ind...

AI Technical Summary

Problems solved by technology

However, due to the introduction of word segmentation, the original search content will be divided into multiple independent entries, and the similarity will also be divided into multiple word similarities. The similarity of word segmentation cannot fully express the similarity of the search content, and The factor of the original search content is not taken into account when merging, and the distance factor that appears in the same document before the word segmentation is not considered, that is, the closer the word segmentation distance, the higher the similarity should be

There is a large gap between the search results and the actual desired results

[0011] 3. For the search of POIs in special fields, its geographic location characteristics are not considered, and digital police work is highly regional. In business scenarios, such as when calling the police, it is usually necessary to pass the adjacent base station of the alarm person or the described landmark POI Latitude and longitude to adjust the ranking of search recommendation results

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