Method and device for extracting core words

Abstract

An embodiment of the invention discloses a method and a device for extracting core words. Accurate core words can be extracted from query words inputted by users, so that query accuracy ratio is increased. The method includes the steps: segmenting the query words by the aid of preset segmentation words to obtain segmentation words forming the query words; respectively matching the segmentation words of the query words with phrases in a core word bank and a non-core word bank; determining the segmentation words matched with the core word bank to serve as core words of the query words if the segmentation words are matched with the core word bank and / or the non-core word bank and unknown segmentation words exist in the segmentation words of the query words; acquiring unknown segmentation words meeting length standards of preset core words or splicing the unknown segmentation words to obtain segmentation words, and enabling the segmentation words to serve as the core words of the query words. The unknown segmentation words are segmentation words which are not matched with the phrases in the core word bank and the non-core word bank.

Description

technical field [0001] The invention relates to the field of word processing, in particular to a method and device for extracting core words. Background technique [0002] In the electronic map query application, when performing POI query according to the query word input by the user, the usual practice is to first segment the query word input by the user, and then match each segment word with the POI database to obtain multiple query results. The query result with the highest frequency among the query results is used as the query result of this query. However, this kind of query method will have the following technical defects: due to the segmentation of query words, multiple word segmentations will be obtained, but some of the word segmentations are not the core words of the query word (the core word refers to the smallest complete word that can accurately express the meaning of the query word. word units), if the query results obtained based on these non-core word querie...

AI Technical Summary

Problems solved by technology

However, this kind of query method will have the following technical defects: due to the segmentation of query words, multiple word segmentations will be obtained, but some of the word segmentations are not the core words of the query word (the core word refers to the smallest complete word that can accurately express the meaning of the query word. word units), if the query results obtained based on these non-core word queries have the highest frequency, taking the query result with the highest frequency as the query result may not be the result actually required by the user, resulting in inaccurate or wrong query results

Images