Learn to explain yourself, when you can: Equipping Concept Bottleneck Models with the ability to abstain on their concept predictions

• URL: http://arxiv.org/abs/2211.11690v1
• Date: Mon, 21 Nov 2022 18:07:14 GMT
• Title: Learn to explain yourself, when you can: Equipping Concept Bottleneck Models with the ability to abstain on their concept predictions
• Authors: Joshua Lockhart, Daniele Magazzeni, Manuela Veloso
• Abstract summary: We show how to equip a neural network based classifier with the ability to abstain from predicting concepts when the concept labeling component is uncertain. Our model learns to provide rationales for its predictions, but only whenever it is sure the rationale is correct.
• Score: 21.94901195358998
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The Concept Bottleneck Models (CBMs) of Koh et al. [2020] provide a means to ensure that a neural network based classifier bases its predictions solely on human understandable concepts. The concept labels, or rationales as we refer to them, are learned by the concept labeling component of the CBM. Another component learns to predict the target classification label from these predicted concept labels. Unfortunately, these models are heavily reliant on human provided concept labels for each datapoint. To enable CBMs to behave robustly when these labels are not readily available, we show how to equip them with the ability to abstain from predicting concepts when the concept labeling component is uncertain. In other words, our model learns to provide rationales for its predictions, but only whenever it is sure the rationale is correct.

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