Alternative methods of predicting competitive events: an application in horserace betting markets

Lessmann, Stefan, Sung, M. and Johnson, Johnnie E.V. (2010) Alternative methods of predicting competitive events: an application in horserace betting markets. [in special issue: Sports Forecasting] International Journal of Forecasting, 26, (3), 518-536. (doi:10.1016/j.ijforecast.2009.12.013).


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Accurately estimating the winning probabilities of participants in competitive events, such as elections and sports events, represents a challenge to standard forecasting frameworks such as regression or classification. They are not designed for modelling the competitive element, whereby a specific participant’s chance of success depends not only on his/her individual capabilities but also on those of his/her competitors. In this paper we consider this problem in the competitive context of horseracing and demonstrate how Breiman’s (2001) random forest classifier can be adapted in order to predict race outcomes. Several empirical experiments are undertaken which demonstrate the features of the adapted random forest procedure and confirm its effectiveness as a forecasting model. Specifically, we demonstrate that predictions derived from the proposed model can be used to make substantial profits, and that these predictions outperform those from traditional statistical techniques.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1016/j.ijforecast.2009.12.013
ISSNs: 0169-2070 (print)
Keywords: probability forecasting, classification, random forest, sports forecasting
Subjects: G Geography. Anthropology. Recreation > GV Recreation Leisure
H Social Sciences > HD Industries. Land use. Labor > HD61 Risk Management
Q Science > QA Mathematics
Divisions : University Structure - Pre August 2011 > School of Management
ePrint ID: 55125
Accepted Date and Publication Date:
June 2010Published
6 February 2010Made publicly available
Date Deposited: 26 Aug 2008
Last Modified: 31 Mar 2016 12:34

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