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arXiv · 2403.01221

A Two-Stage Algorithm for Cost-Efficient Multi-instance Counterfactual Explanations

André Artelt·Andreas Gregoriades
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Abstract

Counterfactual explanations constitute among the most popular methods for analyzing black-box systems since they can recommend cost-efficient and actionable changes to the input of a system to obtain the desired system output. While most of the existing counterfactual methods explain a single instance, several real-world problems, such as customer satisfaction, require the identification of a single counterfactual that can satisfy multiple instances (e.g. customers) simultaneously. To address this limitation, in this work, we propose a flexible two-stage algorithm for finding groups of instances and computing cost-efficient multi-instance counterfactual explanations. The paper presents the algorithm and its performance against popular alternatives through a comparative evaluation.

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André Artelt, Andreas Gregoriades. 2024-03-02. A Two-Stage Algorithm for Cost-Efficient Multi-instance Counterfactual Explanations. https://arxiv.org/abs/2403.01221

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