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A Query Expansion Method for Micro-blog
Received date: 2013-11-28
Revised date: 2013-12-18
Online published: 2014-01-05
In this paper, a query expansion method was proposed for micro-blog, which uses local query expansion and pseudo-feedback technology documentation feedback technology. We divides candidate words into three levels, respectively theme-words layer, documents-word layer and the words-words layer, corresponding to the three levels proposed similarity calculation method of calculation and weights. Finally, experiments were analyzed by the method. The experimental results show that, the received extended-words considering the topic-word weights and documents-word weights were better to meet the users' satisfaction.
Key words： micro-blog; query expansion; latent semantic analysis; TF-IDF; similarity
Tang Xiaobo , Fang Xiaoke . A Query Expansion Method for Micro-blog[J]. Library and Information Service, 2014 , 58(01) : 130 -135 . DOI: 10.13266/j.issn.0252-3116.2014.01.019
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