Query rewriting method and apparatus

A query rewriting and keyword technology, applied in the field of search, can solve the problem that the search results cannot meet the actual needs of users, and cannot directly reflect the actual intention of users, so as to improve the coverage rate of push words, eliminate the need for text similarity, and simplify Effects of the Semantic Comparison Process

Inactive Publication Date: 2017-05-03
ALIBABA GRP HLDG LTD
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  • Description
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  • Application Information

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Problems solved by technology

[0003] However, the search keywords entered by users are often random and cannot directly reflect th

Method used

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  • Query rewriting method and apparatus
  • Query rewriting method and apparatus
  • Query rewriting method and apparatus

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Embodiment Construction

[0023] As described in the background technology section, since the search keywords entered by users are relatively random, they often do not reflect their true intentions, resulting in search results that do not meet the actual needs of users. In order to solve this technical problem, a QR (query rewrite) processing method is proposed in related technologies, which can analyze the search keywords input by the user and automatically replace them with extended words that can reflect the actual intention of the user.

[0024] In related technologies, many technical means for realizing QR have been proposed, mainly including:

[0025] (1) Based on text similarity. Specifically, the text similarity between the search keyword and the extension word is calculated by means such as TF-IDF (term frequency-inverse document frequency), and the extension word corresponding to the search keyword is determined. However, this method cannot calculate the similarity between the search keyword...

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Abstract

The invention provides a query rewriting method and apparatus. The method can comprise the steps of receiving a search keyword input by a user; selecting an extended word corresponding to the search keyword, wherein the similarity between semantic vectors corresponding to the extended word and the search keyword in a semantic vector space of a preset dimension reaches preset similarity; and rewriting the search keyword to the selected extended word. Through the technical scheme, query rewriting can be realized in combination with semanteme, so that the pushed word coverage rate and the rewriting accuracy can be improved.

Description

technical field [0001] The present application relates to the technical field of search, and in particular to a query rewriting method and device. Background technique [0002] Users need to use the search function in many scenarios. When performing a search operation, the user can input any search keywords, and the search engine provides corresponding search results. [0003] However, the search keywords input by the user are often random and cannot directly reflect the actual intention of the user, so that the search results cannot meet the actual needs of the user. Contents of the invention [0004] In view of this, the present application provides a query rewriting method and device, which can realize query rewriting in combination with semantics, and help to improve the coverage rate of pushed words and the accuracy of rewriting. [0005] In order to achieve the above object, the application provides technical solutions as follows: [0006] According to the first a...

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/24534G06F16/2448
Inventor 吴小琼吴黎霞
Owner ALIBABA GRP HLDG LTD
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