2011 UnbiasedOfflineEvaluationofCont
- (Li et al., 2011) ⇒ Lihong Li, Wei Chu, John Langford, and Xuanhui Wang. (2011). “Unbiased Offline Evaluation of Contextual-bandit-based News Article Recommendation Algorithms.” In: Proceedings of the fourth ACM International Conference on Web search and data mining. ISBN:978-1-4503-0493-1 doi:10.1145/1935826.1935878
Subject Headings: Contextual Bandit Algorithm.
Notes
Cited By
- http://scholar.google.com/scholar?q=%222011%22+Unbiased+Offline+Evaluation+of+Contextual-bandit-based+News+Article+Recommendation+Algorithms
- http://dl.acm.org/citation.cfm?id=1935826.1935878&preflayout=flat#citedby
Quotes
Abstract
Contextual bandit algorithms have become popular for online recommendation systems such as Digg, Yahoo! Buzz, and news recommendation in general. Offline evaluation of the effectiveness of new algorithms in these applications is critical for protecting online user experiences but very challenging due to their "partial-label" nature. Common practice is to create a simulator which simulates the online environment for the problem at hand and then run an algorithm against this simulator. However, creating simulator itself is often difficult and modeling bias is usually unavoidably introduced. In this paper, we introduce a replay methodology for contextual bandit algorithm evaluation. Different from simulator-based approaches, our method is completely data-driven and very easy to adapt to different applications. More importantly, our method can provide provably unbiased evaluations. Our empirical results on a large-scale news article recommendation dataset collected from Yahoo! Front Page conform well with our theoretical results. Furthermore, comparisons between our offline replay and online bucket evaluation of several contextual bandit algorithms show accuracy and effectiveness of our offline evaluation method.
References
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Author | volume | Date Value | title | type | journal | titleUrl | doi | note | year | |
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2011 UnbiasedOfflineEvaluationofCont | Xuanhui Wang John Langford Wei Chu Lihong Li | Unbiased Offline Evaluation of Contextual-bandit-based News Article Recommendation Algorithms | 10.1145/1935826.1935878 | 2011 |