Query logs and pseudo-relevance feedback (PRF) offer ways in which terms to refine Web searchers\u2019 queries can be selected, offered to searchers, and used to improve search effectiveness.\u00a0 In this poster we present a study of these techniques that aims to characterize the degree of similarity between them across a set of test queries, and the same set broken out by query type.\u00a0 The results suggest that: (i) similarity increases with the amount of evidence provided to the PRF algorithm, (ii) similarity is higher when titles\/snippets are used for PRF than full-text, and (iii) similarity is higher for navigational than informational queries.\u00a0 The findings have implications for the combined usage of query logs and PRF in generating query refinement alternatives.<\/p>\n","protected":false},"excerpt":{"rendered":"
Query logs and pseudo-relevance feedback (PRF) offer ways in which terms to refine Web searchers\u2019 queries can be selected, offered to searchers, and used to improve search effectiveness.\u00a0 In this poster we present a study of these techniques that aims to characterize the degree of similarity between them across a set of test queries, and […]<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"msr-url-field":"","msr-podcast-episode":"","msrModifiedDate":"","msrModifiedDateEnabled":false,"ep_exclude_from_search":false,"_classifai_error":"","msr-author-ordering":null,"msr_publishername":"","msr_publisher_other":"","msr_booktitle":"","msr_chapter":"","msr_edition":"Proceedings of SIGIR 2007","msr_editors":"","msr_how_published":"","msr_isbn":"","msr_issue":"","msr_journal":"","msr_number":"","msr_organization":"","msr_pages_string":"831\u2013832","msr_page_range_start":"831","msr_page_range_end":"832","msr_series":"","msr_volume":"","msr_copyright":"","msr_conference_name":"Proceedings of SIGIR 2007","msr_doi":"","msr_arxiv_id":"","msr_s2_paper_id":"","msr_mag_id":"","msr_pubmed_id":"","msr_other_authors":"R.W. 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