Combination of Multiple Web Search Results and Its Effect on the Search Performance

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.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Library and Information Science

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Dong, Jianhua

Contributors dc:contributor

• Smith, Linda C.

• Information Science

Language dc:language

eng

Identifier

(MiAaPQ)AAI9989982

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/81569