Query completion method in community ask-answer search

Abstract

The present invention relates to a query completion method in a community ask-answer search, and belongs to the technical field of information retrieval. The method comprises the following steps: step 1: building a cQA database; step 2: building an entity dictionary and a phrase dictionary; step 3: for a query statement input by a user, determining whether the last word is complete, and if not, performing completion on the last word; step 4: for the query statement, sorting questions in the database by using a sorting function, to obtain a list of initial candidate questions; step 5: screening the list according to requirements on divergence, size, local rank preservation and fidelity ; step 6: performing sorting again according to importance and quality of the candidate problems; and step 7: outputting the first N candidate problems after the sorting is performed again, for the user to select. Compared with the prior art, according to the query completion method in a community ask-answer search provided by the present invention, query completion can be achieved in spite of lack of a user search log, thereby solving the problems in the prior art such as similar problem recommendation, an improper size, unchanged relative order and distortion; and the user experience is better than that of an existing search engine.

Description

technical field [0001] The invention relates to a query completion method, in particular to a query completion method in community question-and-answer search, which can automatically complete user queries in community question-and-answer search, effectively improving user experience, and belongs to the technical field of information retrieval . Background technique [0002] With the development of the Internet, the process of informatization and networking of human society has been greatly accelerated, and information retrieval has already replaced manual retrieval and entered the network era. In the field of information retrieval, query completion technology is very helpful for users to search and express information needs. Users often input a short query sentence instead of a complete question when searching, and for the retrieval model, a complete question provides far better information than a short query sentence. Therefore, when a user inputs a query statement, how t...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a sorting-based query completion method for the problem of how to complete the query in the community question and answer search when there is a lack of user search logs

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