Pii: S0306-4573(00)00060-1
نویسندگان
چکیده
We compare a user-de®ned passage feedback (pf) system to a document feedback (df) system. Df employed the adaptive linear model for retrieval, while pf used weighted query expansion based on positive and negative feedback. Twenty-four searchers performed the same six tasks in varying search and systemorder per TREC-8 guidelines. We hypothesized that pf, which featured interactive query expansion, would outperform df, which relied on automatic query expansion. Initial analysis appeared to reject this hypothesis, as df showed slightly higher overall performance than pf. However, analysis by system-order groups indicates only the ®rst pf use had lower performance. These data suggest that pf was more dicult to learn than df, though the second pf use yielded competitive performance. If performance of pf is indeed aected by learning, an improved pf system with usability enhancements may prove to be an eective mechanism for interactive information retrieval. Ó 2001 Elsevier Science Ltd. All rights reserved.
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Pii: S0306-4573(00)00053-4
The study of interactive information retrieval (IR) has been a small but constant part of the Text REtrieval Conferences (TREC 1±8) from the beginning. The main arena for such work has been the Interactive Track (TREC 3±8). This report presents a bibliography of those eorts together with a summary of the evolving experimental framework within which the studies took place. Published by Elsevier...
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