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Title:Combination of Multiple Web Search Results and Its Effect on the Search Performance
Author(s):Dong, Jianhua
Doctoral Committee Chair(s):Smith, Linda C.
Department / Program:Library and Information Science
Discipline:Library and Information Science
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Information Science
Abstract:The study shows that hypothesis one is supported when the value of relevancy threshold is set to be documents that are at least partially relevant, that hypothesis two is not supported, and that hypotheses three and four are not supported in most cases, but supported when the original results are involved in the comparisons. Some other findings are: complex queries are more likely to retrieve documents from more search engines; more than 15% of retrieved Web links are inactive for various reasons; on the average combining more evidence sources does improve Web IR performance. The study shows that the best result of improvement is achieved at the 2-way level, combining the ranked output of two search engines.
Issue Date:2000
Description:140 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2000.
Other Identifier(s):(MiAaPQ)AAI9989982
Date Available in IDEALS:2015-09-25
Date Deposited:2000

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