Document (#12677)

Author

Nelson, M.J.

Title

¬The effect of query characteristics on retrieval results in the TREC retrieval tests

Source

Connectedness: information, systems, people, organizations. Proceedings of CAIS/ACSI 95, the proceedings of the 23rd Annual Conference of the Canadian Association for Information Science. Ed. by Hope A. Olson and Denis B. Ward

Imprint

Alberta : Alberta University, School of Library and Information Studies

Year

1995

Pages

S.156-163

Abstract

There have been 3 Text Retrieval Conferences (TREC) organized by the National Insitute of Standards and Technology (NIST) over the last 3 years which have compared retrieval results on fairly large databases (at least 1 gigabyte). The queries (called topics), relevance judgements and databases were all provided by NIST. The main goal of the tests was to compare various retrieval algorithms using various measures of retrieval effectiveness. When Tague-Sutcliffe performed an analysis of variance on the average precision there is a large group of systems at the top of the ranking which are not significantly different. In addition the queries contribute more to the mean square the systems. To gather further insight into the results, this research investigates the variations in query properties as a partial explanation for the variation in retrieval scores. For each topic statement for the queries, the length (number of content words), langth of various parts and total number of relevant documents are correlated with the average precision

Footnote

Auch unter: http://www.ualberta.ca/dept/slis/cais/nelson.htm

Theme

Retrievalstudien

Object

TREC

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