Beyond Individualized Recourse: Interpretable and Interactive Summaries of Actionable Recourses

• URL: http://arxiv.org/abs/2009.07165v3
• Date: Wed, 28 Oct 2020 19:22:25 GMT
• Title: Beyond Individualized Recourse: Interpretable and Interactive Summaries of Actionable Recourses
• Authors: Kaivalya Rawal, Himabindu Lakkaraju
• Abstract summary: We propose a novel model framework called Actionable Recourse agnostic (AReS) to construct global counterfactual explanations. We formulate a novel objective which simultaneously optimize for correctness of the recourses and interpretability of the explanations. Our framework can provide decision makers with a comprehensive overview of recourses corresponding to any black box model.
• Score: 14.626432428431594
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: As predictive models are increasingly being deployed in high-stakes decision-making, there has been a lot of interest in developing algorithms which can provide recourses to affected individuals. While developing such tools is important, it is even more critical to analyse and interpret a predictive model, and vet it thoroughly to ensure that the recourses it offers are meaningful and non-discriminatory before it is deployed in the real world. To this end, we propose a novel model agnostic framework called Actionable Recourse Summaries (AReS) to construct global counterfactual explanations which provide an interpretable and accurate summary of recourses for the entire population. We formulate a novel objective which simultaneously optimizes for correctness of the recourses and interpretability of the explanations, while minimizing overall recourse costs across the entire population. More specifically, our objective enables us to learn, with optimality guarantees on recourse correctness, a small number of compact rule sets each of which capture recourses for well defined subpopulations within the data. We also demonstrate theoretically that several of the prior approaches proposed to generate recourses for individuals are special cases of our framework. Experimental evaluation with real world datasets and user studies demonstrate that our framework can provide decision makers with a comprehensive overview of recourses corresponding to any black box model, and consequently help detect undesirable model biases and discrimination.

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