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Riding a probabilistic support vector machine to the Stanley Cup

Author

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  • Demers Simon

    (Vancouver Police Department – Planning, Research and Audit Section, Vancouver, British Columbia, Canada)

Abstract

The predictive performance of various team metrics is compared in the context of 105 best-of-seven national hockey league (NHL) playoff series that took place between 2008 and 2014 inclusively. This analysis provides renewed support for traditional box score statistics such as goal differential, especially in the form of Pythagorean expectations. A parsimonious relevance vector machine (RVM) learning approach is compared with the more common support vector machine (SVM) algorithm. Despite the potential of the RVM approach, the SVM algorithm proved to be superior in the context of hockey playoffs. The probabilistic SVM results are used to derive playoff performance expectations for NHL teams and identify playoff under-achievers and over-achievers. The results suggest that the Arizona Coyotes and the Carolina Hurricanes can both be considered Round 2 over-achievers while the Nashville Predators would be Round 2 under-achievers, even after accounting for several observable team performance metrics and playoff predictors. The Vancouver Canucks came the closest to qualify as Stanley Cup Finals under-achievers after they lost against the Boston Bruins in 2011. Overall, the results tend to support the idea that the NHL fields extremely competitive playoff teams, that chance or other intangible factors play a significant role in NHL playoff outcomes and that playoff upsets will continue to occur regularly.

Suggested Citation

  • Demers Simon, 2015. "Riding a probabilistic support vector machine to the Stanley Cup," Journal of Quantitative Analysis in Sports, De Gruyter, vol. 11(4), pages 205-218, December.
    • Handle: RePEc:bpj:jqsprt:v:11:y:2015:i:4:p:205-218:n:2
    DOI: 10.1515/jqas-2014-0093
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    References listed on IDEAS

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    Cited by:

    1. Song, Kai & Shi, Jian, 2020. "A gamma process based in-play prediction model for National Basketball Association games," European Journal of Operational Research, Elsevier, vol. 283(2), pages 706-713.

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