A Belief Model of Query Difficulty That Uses Subjective Logic

Christina Lioma, Roi Blanco, Raquel Mochales-Palau, Marie-Francine Moens

4 Citationer (Scopus)

Abstract

The difficulty of a user query can affect the performance of Information Retrieval (IR) systems. This work presents a formal model for quantifying and reasoning about query difficulty as follows: Query difficulty is considered to be a subjective belief, which is formulated on the basis of various types of evidence. This allows us to define a belief model and a set of operators for combining evidence of query difficulty. The belief model uses subjective logic , a type of probabilistic logic for modeling uncertainties. An application of this model with semantic and pragmatic evidence about 150 TREC queries illustrates the potential flexibility of this framework in expressing and combining evidence. To our knowledge, this is the first application of subjective logic to IR.
OriginalsprogEngelsk
TitelICTIR '09 Proceedings of the 2nd International Conference on Theory of Information Retrieval: Advances in Information Retrieval Theory
ForlagSpringer
Publikationsdato2009
Sider92-103
StatusUdgivet - 2009
Udgivet eksterntJa

Fingeraftryk

Dyk ned i forskningsemnerne om 'A Belief Model of Query Difficulty That Uses Subjective Logic'. Sammen danner de et unikt fingeraftryk.

Citationsformater