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User profile creating and personalized search ranking method and system based on user requirements

A technology of user files and user needs, applied in the field of information retrieval, can solve problems such as inability to implement the same standard, differences, and changes in user preferences, and achieve the effects of improving judgment accuracy, optimizing user experience, and improving accuracy

Inactive Publication Date: 2016-06-15
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0005] On the other hand, there are still some other difficulties to be solved in the personalized ranking based on user needs
For example: there are differences in the distribution of user preferences, and the same standard cannot be implemented in the process of personalized selection; user preferences will continue to change over time

Method used

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  • User profile creating and personalized search ranking method and system based on user requirements
  • User profile creating and personalized search ranking method and system based on user requirements
  • User profile creating and personalized search ranking method and system based on user requirements

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Embodiment Construction

[0038] According to an embodiment of the present invention, an adaptive personalized search ranking method based on user needs is proposed, the method includes an information retrieval step, an adaptive user profile creation step and a personalized re-ranking step. These steps are described in detail below.

[0039] 1. Information retrieval steps

[0040] In the information retrieval step, the query statement submitted by the user is received, and the search engine is used for query to obtain relevant pages, and then the initial page ranking result is returned according to the semantic correlation degree between each page and the query statement. It should be noted that this initial page ranking result does not consider semantic polysemy and ambiguity of the query statement. For example, the search term "model" may refer to a toy model or a mathematical model, and the initial result only considers the search term The relationship does not take into account user preferences, i...

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Abstract

The invention provides a user profile creating method based on user requirements. The method includes the steps that 1, in the searching process of a user, behavior features for returned pages of the user and page feature vectors of pages clicked by the user are extracted, wherein the page feature vectors comprise features reflecting the layout of the pages, features representing the reading difficulty of the pages and page data volumes; 2, based on the feature vectors of the multiple pages clicked by the user, a user profile of the user is constructed, wherein according to the behavior features for all the pages of the user, user preference weights of the pages are set. The invention further provides a corresponding personalized search ranking method and system. The personalized search ranking method and system can be sufficiently adapted to preference for different features of the user, improve the accuracy of a ranking result and improving the judgment precision of the satisfaction degree of the user.

Description

technical field [0001] The present invention relates to the technical field of information retrieval, in particular, the present invention relates to a method and system for creating user profiles and personalized search ranking based on user needs. Background technique [0002] At present, commonly used search engines can only rank the returned content according to the relevance degree of the query text, without considering the diversity and dynamic characteristics of user needs. With the continuous growth of network data, this ranking method based only on the degree of text relevance is increasingly unable to meet the requirements of users. Therefore, how to adapt to the needs of different users and perform personalized ranking on the pages obtained by searching has received extensive attention. [0003] At present, the personalized ranking based on user needs is mainly realized by enhancing the topic relevance of the returned pages and user preferences. In this topic-ba...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/9535
Inventor 孟绪颖许志伟王淼张瀚文张玉军
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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