| A Novel Web Query Automatic Expansion Based on Rough Set |
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| 作者姓名： | YI Gaoxiang~ HU Heping~ LU Zhengding~ LI Ruixuan~ . College of Computer Science and Technology Huazhong University of Science and Technology Wuhan Hubei China . China Academy of Safety Science and Technology Beijing China |
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| 作者单位： | YI Gaoxiang~ 1，2，HU Heping~ 1，LU Zhengding~1，LI Ruixuan~1 1. College of Computer Science and Technology，Huazhong University of Science and Technology，Wuhan 430074，Hubei，China 2. China Academy of Safety Science and Technology，Beijing 100029，China |
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| 摘 要： | 0 IntroductionSearchingthe webis not always sosuccessful as users expect .Most of the retrieved sets of documents in a web searchmeet the search criteria but do not satisfy the user’s needs. Onecrucial reasonis that users generallylack of specificityin the for-mulation of the queries.Some causes of this are that most of theti mes ,the user does not knowthe vocabulary of thetopic,or que-ryterms do not come to user’s mind at the query moment .One possible solutiontothis problemis the process …
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| 收稿时间： | 23 February 2006 |
A Novel Web Query Automatic Expansion Based on Rough Set |
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| YI Gaoxiang,HU Heping,LU Zhengding,LI Ruixuan.A Novel Web Query Automatic Expansion Based on Rough Set[J].Wuhan University Journal of Natural Sciences,2006,11(5):1167-1171. |
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| Authors: | YI Gaoxiang HU Heping LU Zhengding LI Ruixuan |
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| Institution: | (1) College of Computer Science and Technology, Huazhong University of Science and Technology, 430074 Wuhan, Hubei, China;(2) China Academy of Safety Science and Technology, 100029 Beijing, China |
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| Abstract: | One of important reasons caused low precision was presented, which was due to inaccurate express of the query. So a new method of automatic query expansion based on tolerance rough was put forward. In the algorithm, the uncertain connection between query terms and retrial documents was described as term tolerance class. The upper approximation set of query sentence was considered as query expansion. The new additional terms were also given weight numbers. The results of experiment on collection of Google 5 000 Web pages showed that the approach was effective on query expansion and high search precision was gained. |
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| Keywords: | Web query query expansion rough set |
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