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Query result diversification method

A query result and sub-query technology, applied in the field of information retrieval, can solve the problems of unavailability of query logs, query keywords that cannot accurately represent the user's query intention, and inaccurate query results.

Active Publication Date: 2013-09-25
NEC (CHINA) CO LTD
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0022] According to the method of diversifying the query results above, in the prior art, the sub-query set is determined based on the query log. However, the inventors of the present invention found that since the query log is generated based on the query keyword input by the user, the query key Words cannot accurately represent the actual query intention of the user at that time. At the same time, for some search environments such as enterprise search, the query log is not available or the scale of the query log is not enough to support query disambiguation. Therefore, the query log is an unreliable data source. The query results generated after the query results are diversified are not accurate

Method used

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Embodiment Construction

[0044] Embodiments of the present invention provide a method and device for diversifying query results. The domain ontology is used to determine the relevant keyword combination set of the keyword set of a given query, and use these relevant keyword combinations to perform queries, avoiding the use of unreliable query logs Determine the sub-query keywords, so that the diversified query results are more accurate.

[0045] Such as image 3 As shown, the query result diversification method provided by the embodiment of the present invention includes:

[0046] Step S301, according to the keyword set of a given query, determine the relevant keyword combination set of the keyword set in the domain ontology;

[0047] Step S302, searching according to each relevant keyword combination in the relevant keyword combination set, and obtaining a query result set;

[0048] Step S303, obtaining a corresponding number of query results from the query result set;

[0049] Step S304, sorting ...

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Abstract

The invention discloses a query result diversification method and device and relates to information retrieval techniques. A set of related keyword combinations of a set of keywords of a given query is determined by domain ontology, query is conducted by using the related keyword combinations, and unreliable query logs are prevented from being used to determine subquery keywords, thus enabling diversified query results to be more accurate.

Description

technical field [0001] The invention relates to information retrieval technology, in particular to a method and device for diversifying query results. Background technique [0002] Traditional information retrieval techniques mainly achieve diversification through post-processing or re-ranking steps of literature retrieval, such as clustering or classification of search results, re-ranking results according to mean-variance analysis, etc. [0003] With the development of information retrieval technology, users have higher and higher requirements for the diversification of search results and query disambiguation of information retrieval. Among them, diversification of search results means that the query keywords entered by the user may have multiple interpretations, and when obtaining query results, results including these different interpretations should be generated. The purpose of diversification of search results is to balance the relevance of search results and novelty,...

Claims

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Application Information

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IPC IPC(8): G06F17/30
Inventor 李建强刘春辰
Owner NEC (CHINA) CO LTD
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