Query reformulation, individual difference and search performance over query sessions
Dr Ying-Hsang Liu (Charles Sturt University)
COMPUTER SCIENCE SEMINARDATE: 2011-05-26
TIME: 16:00:00 - 17:00:00
LOCATION: CSIT Seminar Room, N101
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ABSTRACT:
Query reformulation is the useras articulation of information needs after the initial search. In this talk I will report 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. I will examine the characteristics of queries formulated by different types of searchers, exemplified by different levels of domain knowledge and search training. Using several effectiveness measures, such as MAP and nsDCG (normalised session DCG), I will discuss the relationship between individual difference and search performance over query sessions.
BIO:
Ying-Hsang Liu is a Lecturer in Information Management at the School of Information Studies, Charles Sturt University. He earned his Ph.D. in Library and Information Science from the School of Communication and Information at Rutgers University. His primary research area lies at the intersections of interactive information retrieval, organisation of information and human information behaviour, with an emphasis on user- centred information access system design and evaluation.
