Query based keyword extension method, device and system

A keyword expansion and keyword technology, applied in the field of information processing, can solve the problems of limited number of keywords, irrelevant displayed content, difficult to find keywords, etc., to achieve a wide range of applications, enrich matching results, and improve comprehensiveness Effect

Active Publication Date: 2014-06-11
TENCENT TECH (SHENZHEN) CO LTD
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AI Technical Summary

Problems solved by technology

[0005] However, in the existing technology, keywords are only extracted literally from the search string, and the number of keywords obtained is limited, so it is difficult to ensure the comprehensiveness of the displayed content
[0006] Moreover, the keywords and retrieval strings extracted in the prior art are only limited to the association on the text, and other semantically related keywords are difficult to find
The keywords extracted from the search string itself are often part of the search stri

Method used

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  • Query based keyword extension method, device and system
  • Query based keyword extension method, device and system
  • Query based keyword extension method, device and system

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[0033] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] In the prior art, the mapping from search strings to keywords is often involved, that is, the matching of search strings. Common search string matching methods in the prior art mainly include:

[0035] (1) Match keywords from the search string itself, such as exact match, phrase match and broad match (here specifically refers to broad match with morpheme deletion, the extracted keywords are a combination of one or several substrings of the search string). For example, an advertiser submits the following keywords:

[0036] (A, B, C, D, E, F are single morphemes);

[0037] When a user enters the search string ABCDEF, the advertisement matching system of the search engine can find the keyword ABCDEF through exact matching; through phrase matching, the keywords AB...

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Abstract

An embodiment of the invention provides a query based keyword extension method, device and system. The query based keyword extension method comprises setting a preset keyword set, enabling preset keywords in the preset keyword set to be served as a pattern query and constructing the preset keyword set into a keyword tree; receiving the query and obtaining a web searching result based on the query; performing pattern matching aiming at the web searching result to obtain the pattern query and confirming extension keywords based on the query through the obtained pattern query. The query based keyword extension method has the advantages of enriching keyword matching results, expanding keywords for the query, improving comprehensiveness of exhibition contents, quantizing similarity between the query and the keywords and guaranteeing the relevance of the exhibition contents.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of information processing, and more specifically, relate to a keyword expansion method, device and system based on a retrieval string. Background technique [0002] In today's information age, various information devices have emerged as the times require: fixed telephones and mobile phones for voice transmission; servers and personal computers for information resource sharing and processing; various TV sets for video data display, etc. Wait. These devices are produced to solve actual needs in specific fields. With the advent of the integration of electronic consumption, computer, and communication (3C), people are paying more and more attention to the research on the comprehensive utilization of information equipment in various fields, so as to make full use of existing resources and equipment to serve people. better service. [0003] Search engine advertisement is an exemplary a...

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/951G06F40/30G06Q30/0251
Inventor 王艳敏王迪赫南张文斌胡立新刘小兵胡景贺朱建朋
Owner TENCENT TECH (SHENZHEN) CO LTD
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