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- 129 creator jun-wang.
- 129 creator marc-sloan.
- 129 type InProceedings.
- 129 label "Dynamical Information Retrieval Modelling: A Portfolio-Armed Bandit Machine Approach".
- 129 sameAs 129.
- 129 abstract "The dynamic nature of document relevance is largely ignored by traditional Information Retrieval (IR) models, which assume that scores (relevance) for documents given an information need are static. In this paper, we formulate a general Dynamical Information Retrieval problem, where we consider retrieval as a stochastic, controllable process. The ranking action continuously controls the retrieval system's dynamics and an optimal ranking policy is found that maximises the overall users' satisfaction during each period. Through deriving the posterior probability of the documents evolving relevancy from user clicks, we can provide a plug-in framework for incorporating a number of click models, which can be combined with Multi-Armed Bandit theory and Portfolio Theory of IR to create a dynamic ranking rule that takes rank bias and click dependency into account. We verify the versatility of our algorithms in a number of experiments and demonstrate improved performance over strong baselines and as a result signicant performance gains have been achieved.".
- 129 hasAuthorList authorList.
- 129 isPartOf proceedings.
- 129 isPartOf proceedings.
- 129 keyword "Dynamical information retrieval".
- 129 keyword "multi-armed bandit machine".
- 129 keyword "portfolio theory".
- 129 title "Dynamical Information Retrieval Modelling: A Portfolio-Armed Bandit Machine Approach".