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Interpretability Guarantees with Merlin-Arthur Classifiers

Stephan W√§ldchen · Kartikey Sharma · Berkant Turan · Max Zimmer · Sebastian Pokutta

MR1 & MR2 - Number 93
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Thu 2 May 8 a.m. PDT — 8:30 a.m. PDT


We propose an interactive multi-agent classifier that provides provable interpretability guarantees even for complex agents such as neural networks.These guarantees consist of lower bounds on the mutual information between selected features and the classification decision.Our results are inspired by the Merlin-Arthur protocol from Interactive Proof Systems and express these bounds in terms of measurable metrics such as soundness and completeness.Compared to existing interactive setups, we rely neither on optimal agents nor on the assumption that features are distributed independently. Instead, we use the relative strength of the agents as well as the new concept of Asymmetric Feature Correlation which captures the precise kind of correlations that make interpretability guarantees difficult.We evaluate our results on two small-scale datasets where high mutual information can be verified explicitly.

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