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Ensemble Recommendations via Thompson Sampling : an Experimental Study within e-Commerce
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- Brodén, Björn (author)
- Apptus Technologies, Lund, Sweden
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- Hammar, Mikael (author)
- Apptus Technologies, Lund, Sweden
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- Nilsson, Bengt J. (author)
- Malmö universitet,Institutionen för datavetenskap och medieteknik (DVMT)
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- Paraschakis, Dimitris, 1980- (author)
- Malmö universitet,Institutionen för datavetenskap och medieteknik (DVMT)
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(creator_code:org_t)
- 2018-03-05
- 2018
- English.
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In: Proceeding IUI '18 23rd International Conference on Intelligent User Interfaces. - New York, NY, USA : ACM Digital Library. ; , s. 19-29
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Abstract
Subject headings
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- This work presents an extension of Thompson Sampling bandit policy for orchestrating the collection of base recommendation algorithms for e-commerce. We focus on the problem of item-to-item recommendations, for which multiple behavioral and attribute-based predictors are provided to an ensemble learner. We show how to adapt Thompson Sampling to realistic situations when neither action availability nor reward stationarity is guaranteed. Furthermore, we investigate the effects of priming the sampler with pre-set parameters of reward probability distributions by utilizing the product catalog and/or event history, when such information is available. We report our experimental results based on the analysis of three real-world e-commerce datasets.
Keyword
- recommender system
- e-commerce
- thompson sampling
Publication and Content Type
- ref (subject category)
- kon (subject category)
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