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The TREC-9 Interactive Track Report



William Hersh, Paul D. Over


The TREC-9 Interactive Track has the goal of investigating interactive information retrieval by examining the process as well as the results. In TREC-9, six research groups ran a total of 12 interactive information retrieval (IR) system variants on a shared problem: a fact-finding task, eight questions, and newspaper/newswire documents from the TREC collections. This report summarizes the shared experimental framework, which for TREC-9 was designed to support analysis and comparison of system performance only within sites. The report refers the reader to separate discussions of the experiments performed by each participating group - their hypotheses, experimental systems and results. The papers from each of the participating groups and the raw and evaluated results are available via the TREC home page (
The TREC-9 Interactive Track Report


experimental design, interactive information retrieval, TREC


Hersh, W. and Over, P. (2001), The TREC-9 Interactive Track Report, The TREC-9 Interactive Track Report, [online], (Accessed April 19, 2024)
Created November 18, 2001, Updated October 12, 2021