Do Concept Bottleneck Models Respect Localities?

• URL: http://arxiv.org/abs/2401.01259v5
• Date: Wed, 25 Jun 2025 17:10:45 GMT
• Title: Do Concept Bottleneck Models Respect Localities?
• Authors: Naveen Raman, Mateo Espinosa Zarlenga, Juyeon Heo, Mateja Jamnik,
• Abstract summary: Concept-based explainability methods use human-understandable intermediaries to produce explanations for machine learning models.<n>We assess whether concept predictors leverage "relevant" features to make predictions, a term we call locality.<n>We find that many concept-based models used in practice fail to respect localities because concept predictors cannot always clearly distinguish distinct concepts.
• Score: 14.77558378567965
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Concept-based explainability methods use human-understandable intermediaries to produce explanations for machine learning models. These methods assume concept predictions can help understand a model's internal reasoning. In this work, we assess the degree to which such an assumption is true by analyzing whether concept predictors leverage "relevant" features to make predictions, a term we call locality. Concept-based models that fail to respect localities also fail to be explainable because concept predictions are based on spurious features, making the interpretation of the concept predictions vacuous. To assess whether concept-based models respect localities, we construct and use three metrics to characterize when models respect localities, complementing our analysis with theoretical results. Each of our metrics captures a different notion of perturbation and assess whether perturbing "irrelevant" features impacts the predictions made by a concept predictors. We find that many concept-based models used in practice fail to respect localities because concept predictors cannot always clearly distinguish distinct concepts. Based on these findings, we propose suggestions for alleviating this issue.

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