This paper reports on findings from a larger study that was designed to assess the effectiveness of MeSH (Medical Subject Headings) terms when used by different types of searchers in an interactive search environment. Specifically, the impact of individual differences of domain knowledge and search expertise on querying behavior and user search performance is assessed, using the search logs from an interactive information retrieval experiment. The results show that there are significant differences in query reformulations characterized by the time spent and number of query iterations. From both single query and session-based perspectives of evaluation strategy in evaluating queries over search sessions, it establishes the correlation between the individual difference and the user search performance. More importantly, search novices have not benefited from query reformulations in searching relatively difficult search topics for adhoc search tasks in terms of the precision measure. Implications for interactive information retrieval system evaluation are discussed.
|Publikationsdato||1. dec. 2011|
|Status||Udgivet - 1. dec. 2011|
|Begivenhed||Symposium on Learning, Knowledge, and Adaptivity 2011, LWA 2011 - Magdeburg, Tyskland|
Varighed: 28. sep. 2011 → 30. sep. 2011
|Konference||Symposium on Learning, Knowledge, and Adaptivity 2011, LWA 2011|
|Periode||28/09/2011 → 30/09/2011|