A Mixture-of-Modelers Approach to Forecasting NCAA Tournament Outcomes

Yuan, L. H., Liu, A., Yeh, A., Kaufman, A., Reece, A., Bull, P., & Bornn, L. (2015).
Journal of Quantitative Analysis in Sports, 11(1), 13-27.

Abstract: Predicting the outcome of a single sporting event is difficult; predicting all of the outcomes for an entire tournament is a monumental challenge. Despite the difficulties, millions of people compete each year to forecast the outcome of the NCAA men’s basketball tournament, which spans 63 games over 3 weeks. Statistical prediction of game outcomes involves a multitude of possible covariates and information sources, large performance variations from game to game, and a scarcity of detailed historical data. In this paper, we present the results of a team of modelers working together to forecast the 2014 NCAA men’s basketball tournament. We present not only the methods and data used, but also several novel ideas for post-processing statistical forecasts and decontaminating data sources. In particular, we highlight the difficulties in using publicly available data and suggest techniques for improving their relevance.

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