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Improving two-stage ad-hoc retrieval for short queries
1998
Proceedings of the 21st annual international ACM SIGIR conference on Research and development in information retrieval - SIGIR '98
Short queries in an ad-hoc retrieval environment are difftcult but unavoidable. We present several methods to try to improve our current strategy of 2-stage pseudorelevance feedback retrieval in such a situation. They are: I) avtf query term weighting, 2) variable high frequency Ziptian threshold, 3) collection enrichment, 4) enhancing term variety in raw queries, and 5) using retrieved document local term statistics. Avtf employs collection statistics to weight terms in short queries. Variable
doi:10.1145/290941.291003
dblp:conf/sigir/KwokC98
fatcat:hpkqnt4adfdunmpoxsjreifyoy