TY - GEN
T1 - Clarity re-visited
AU - Hummel, Shay
AU - Shtok, Anna
AU - Raiber, Fiana
AU - Kurland, Oren
AU - Carmel, David
PY - 2012
Y1 - 2012
N2 - We present a novel interpretation of Clarity [5], a widely used query performance predictor. While Clarity is commonly described as a measure of the "distance" between the language model of the top-retrieved documents and that of the collection, we show that it actually quantifies an additional property of the result list, namely, its diversity. This analysis, along with empirical evaluation, helps to explain the low prediction quality of Clarity for large-scale Web collections.
AB - We present a novel interpretation of Clarity [5], a widely used query performance predictor. While Clarity is commonly described as a measure of the "distance" between the language model of the top-retrieved documents and that of the collection, we show that it actually quantifies an additional property of the result list, namely, its diversity. This analysis, along with empirical evaluation, helps to explain the low prediction quality of Clarity for large-scale Web collections.
KW - clarity
KW - query-performance prediction
UR - http://www.scopus.com/inward/record.url?scp=84866594025&partnerID=8YFLogxK
U2 - 10.1145/2348283.2348458
DO - 10.1145/2348283.2348458
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AN - SCOPUS:84866594025
SN - 9781450316583
T3 - SIGIR'12 - Proceedings of the International ACM SIGIR Conference on Research and Development in Information Retrieval
SP - 1039
EP - 1040
BT - SIGIR'12 - Proceedings of the International ACM SIGIR Conference on Research and Development in Information Retrieval
T2 - 35th Annual ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2012
Y2 - 12 August 2012 through 16 August 2012
ER -