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ECIR
2007
Springer

Combining Evidence for Relevance Criteria: A Framework and Experiments in Web Retrieval

8 years 7 months ago
Combining Evidence for Relevance Criteria: A Framework and Experiments in Web Retrieval
Abstract. We present a framework that assesses relevance with respect to several relevance criteria, by combining the query-dependent and query-independent evidence indicating these criteria. This combination of evidence is modelled in a uniform way, irrespective of whether the evidence is associated with a single document or related documents. The framework is formally expressed within Dempster-Shafer theory. It is evaluated for web retrieval in the context of TREC’s Topic Distillation task. Our results indicate that aggregating content-based evidence from the linked pages of a page is beneficial, and that the additional incorporation of their homepage evidence further improves the effectiveness. Key words: Dempster-Shafer theory, Topic Distillation task 1 Motivation, Background, and Aim In ad-hoc Information Retrieval (IR), multiple criteria are applied when assessing the relevance of documents. The relevance criterion at the heart of IR, and the one usually employed by IR system...
Theodora Tsikrika, Mounia Lalmas
Added 29 Oct 2010
Updated 29 Oct 2010
Type Conference
Year 2007
Where ECIR
Authors Theodora Tsikrika, Mounia Lalmas
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