Microblog service expert positioning method based on content relevance and social contact influence

A positioning method and influential technology, applied in the direction of instruments, calculations, electrical digital data processing, etc., can solve problems such as accurate capture that few studies have done, and achieve the effect of deepening understanding

Inactive Publication Date: 2013-09-18
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Few studies accurately capture the latent semantics in user microblog content and make full use of the rich information in microblogging services for expert localization

Method used

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  • Microblog service expert positioning method based on content relevance and social contact influence
  • Microblog service expert positioning method based on content relevance and social contact influence
  • Microblog service expert positioning method based on content relevance and social contact influence

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0048] Assume that the Weibo service contains a total of 1,000 users.

[0049] Step 1: For 1,000 Weibo users, gather all the Weibo content published by each user (including forwarding) into a document, and perform data cleaning on these 1,000 documents as the input of LDA, assuming the topic to be extracted The number is 50. After LDA processing, the probability distribution of 50 topics extracted from each document and the probability distribution of each topic in all words can be obtained. These probability distributions are stored in matrix form (matrix Dt and matrix Tw). figure 2 Indicates the screenshot of the extracted topic part, the larger the font, the greater the weight of the word in the topic;

[0050] Step 2: For each topic extracted in the first step, calculate the user's social influence under the topic according to formula (1), image 3 A screenshot of the calculated user influence;

[0051] Step 3: Determine the keyword to be queried, assuming that the keyw...

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Abstract

The invention provides a microblog service expert positioning method based on content relevance and social contact influence. The method comprises the following steps: a, extracting potential semantic subjects in microblog service; b, calculating the social contact influence of a microblog user under different subjects; c, checking each time to confirm the professional degree of a microblog service user under key words to be checked; and d, positioning an expert corresponding to the key words according to the professional degree of the microblog service user under the key words to be checked. According to the method, the content relevance of the user and the checked key words and the social contact influence of the user under the checked key words in the expert positioning process are comprehensively considered, and the method has the advantages that the professional degree of the user under the key words to be checked can be reflected more accurately, and accurate ranking is provided for expert positioning in microblog service.

Description

technical field [0001] The invention relates to the field of expert positioning for microblog services, in particular to a microblog service expert positioning method based on content relevance and social influence. Background technique [0002] Expert positioning in microblog services refers to finding expert users related to a certain keyword in microblog services, and expert positioning is also often referred to as expert search. The positioning of expert users on Weibo services can help Weibo users quickly find expert users in the fields they are interested in, so that they can not only obtain dynamic information in the field by following these experts, but also directly contact experts. User asks a question. Moreover, positioning expert users in the microblog service is also beneficial for merchants to carry out product marketing and so on. [0003] There is still relatively little research on expert positioning in microblog services. Some microblog services themselve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 杨燕张波郝娟黄保荃潘云杜泽宇
Owner EAST CHINA NORMAL UNIV
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