IDF revisited: A simple new derivation within the Robertson-Spärck Jones probabilistic model

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dc.creatorLee, Lillian
dc.date2007-05-08
dc.date.accessioned2026-07-07T08:00:12Z
dc.date.available2026-07-07T08:00:12Z
dc.descriptionThere have been a number of prior attempts to theoretically justify the effectiveness of the inverse document frequency (IDF). Those that take as their starting point Robertson and Sparck Jones's probabilistic model are based on strong or complex assumptions. We show that a more intuitively plausible assumption suffices. Moreover, the new assumption, while conceptually very simple, provides a solution to an estimation problem that had been deemed intractable by Robertson and Walker (1997).
dc.descriptionTo appear, Proceedings of SIGIR 2007, poster paper (2 pages)
dc.identifierhttps://arxiv.org/abs/0705.1161
dc.identifierhttp://arxiv.org/abs/0705.1161
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/128620
dc.subjectInformation Retrieval
dc.subjectComputation and Language
dc.subjectH.3.3
dc.titleIDF revisited: A simple new derivation within the Robertson-Spärck Jones probabilistic model
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