Papers › Beta Shapley: a Unified and Noise-reduced Data Valuation Framework for Machine Learning

Beta Shapley: a Unified and Noise-reduced Data Valuation Framework for Machine Learning

26 Oct 2021arXiv:2110.14049archive 2025-07-28

Yongchan Kwon, James Zou

Data Shapley has recently been proposed as a principled framework to quantify the contribution of individual datum in machine learning. It can effectively identify helpful or harmful data points for a learning algorithm. In this paper, we propose Beta Shapley, which is a substantial generalization of Data Shapley. Beta Shapley arises naturally by relaxing the efficiency axiom of the Shapley value, which is not critical for machine learning settings. Beta Shapley unifies several popular data valuation methods and includes data Shapley as a special case. Moreover, we prove that Beta Shapley has several desirable statistical properties and propose efficient algorithms to estimate it. We demonstrate that Beta Shapley outperforms state-of-the-art data valuation methods on several downstream ML tasks such as: 1) detecting mislabeled training data; 2) learning with subsamples; and 3) identifying points whose addition or removal have the largest positive or negative impact on the model.

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ykwon0407/beta_shapley officialmentioned in papermentioned on GitHub report
aai-institute/pyDVL mentioned on GitHubpytorchLGPL-3.0 report

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BIG-bench Machine LearningData Valuation

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