Synonym extension method and device for searching information

Abstract

The present invention proposes a method and device for expanding synonyms of search information, wherein the method includes: performing word segmentation processing on search information to obtain at least one word segment of the search information; obtaining a set of candidate synonyms for word segmentation; wherein, among the set of candidate synonyms Including at least one synonym of the participle; for each synonym, forming a synonym pair including the participle and the synonym; performing feature extraction on the synonym pair to obtain a feature set of the synonym pair; predicting the synonym pair according to the feature set, and obtaining the synonym pair and predicting it as a reasonable replacement If the target probability exceeds the preset threshold, a synonym expansion item is formed by word segmentation and synonyms, and search results are obtained based on the synonym expansion item search. The method can improve the rationality and accuracy of synonym replacement, improve the recall rate and precision of search results, and solve the technical problems of inaccurate synonym replacement and poor recall rate of search results in the prior art.

Description

technical field [0001] The invention relates to the technical field of information search, in particular to a method and device for expanding synonyms of search information. Background technique [0002] When a user uses a search engine to search for information, it often occurs that the concept of the same word in the input search term is inconsistent with the obtained search result. In order to improve the recall rate of search results, the search engine needs to perform synonym expansion on the search words entered by users, and expand the search scope by replacing the search words with synonyms, so as to improve the accuracy of search results. [0003] In the relevant search technology, the replacement probability of synonyms is mainly calculated based on the replacement model of the language model. However, the rationality of synonym replacement cannot be accurately judged only based on the language model. There may be a problem that the replacement probability of the ...

AI Technical Summary

Problems solved by technology

[0005] For this reason, the first object of the present invention is to propose a synonym extension method for searching information, by extracting features of the synonym pair, obtaining the relative characteristics of the synonym pair, predicting the synonym pair according to the relative feature, and obtaining the synonym pair prediction as The probability of reasonable replacement is predicted as reasonable word segmentation and synonyms to form a search formula to search, so as to improve the rationality and accuracy of synonyms replacement, improve the recall rate and precision of search results, and solve the problem of inaccurate replacement of synonyms and search problems in the prior art. Technical issues with poor recall of results

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