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Estimation du paramètre de collection des modèles d'information pour la RI

Abstract : In this paper we explore various methods to estimate the collection parameter of the information based models for ad hoc information retrieval. In previous studies, this parameter was set to the average number of documents where the word under consideration appears. We introduce here a fully formalized estimation method for both the log-logistic and the smoothed power law models that leads to improved versions of these models in IR. Furthermore, we show that the previous setting of the collection parameter of the log-logistic model is a special case of the estimated value proposed here.
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https://hal.archives-ouvertes.fr/hal-00944625
Contributor : Parantapa Goswami <>
Submitted on : Monday, February 10, 2014 - 6:50:47 PM
Last modification on : Monday, April 20, 2020 - 11:24:01 AM

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  • HAL Id : hal-00944625, version 1

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Parantapa Goswami, Eric Gaussier. Estimation du paramètre de collection des modèles d'information pour la RI. 10ème Conférence en Recherche d'Infomations et Applications, Apr 2013, Neuchâtel, Suisse, Suisse. pp.201-216. ⟨hal-00944625⟩

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