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Cracking the Black Box: Distilling Deep Sports Analytics

06/04/2020

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by Xiangyu Sun, et al.

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This paper addresses the trade-off between Accuracy and Transparency for deep learning applied to sports analytics. Neural nets achieve great predictive accuracy through deep learning, and are popular in sports analytics. But it is hard to interpret a neural net model and harder still to extract actionable insights from the knowledge implicit in it. Therefore, we built a simple and transparent model that mimics the output of the original deep learning model and represents the learned knowledge in an explicit interpretable way. Our mimic model is a linear model tree, which combines a collection of linear models with a regression-tree structure. The tree version of a neural network achieves high fidelity, explains itself, and produces insights for expert stakeholders such as athletes and coaches.

Xiangyu Sun
4 publications
Jack Davis
1 publication
Oliver Schulte
15 publications
Guiliang Liu
8 publications

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