论文标题
分解反事实的解释
Decomposing Counterfactual Explanations for Consequential Decision Making
论文作者
论文摘要
算法追索权的目的是通过建议可行的功能更改(例如减少信用卡的数量)来逆转自动决策的不利决策(例如,从贷款拒绝到批准)。为了产生低成本追索权,大多数方法在特征是独立操纵(IMF)的假设下起作用的。为了解决特征依赖性问题,通常通过因果追索范式来研究追索问题。然而,众所周知,在因果模型和结构方程中编码的强大假设阻碍了这些方法在因果依赖性结构模棱两可的复杂域中的适用性。在这项工作中,我们开发了\ texttt {dear}(解开算法求助),这是一个新颖而实用的追索框架,它弥合了IMF与强大因果假设之间的差距。 \ texttt {dear}通过从有希望的追索性特征的子集中删除共同特征的潜在表示,从而生成了recourses,以捕获主要的实践追索权。我们对现实世界数据的实验证实了我们理论上动机的追索模型,并强调了我们框架在特征依赖性存在下提供可靠的低成本追索权的能力。
The goal of algorithmic recourse is to reverse unfavorable decisions (e.g., from loan denial to approval) under automated decision making by suggesting actionable feature changes (e.g., reduce the number of credit cards). To generate low-cost recourse the majority of methods work under the assumption that the features are independently manipulable (IMF). To address the feature dependency issue the recourse problem is usually studied through the causal recourse paradigm. However, it is well known that strong assumptions, as encoded in causal models and structural equations, hinder the applicability of these methods in complex domains where causal dependency structures are ambiguous. In this work, we develop \texttt{DEAR} (DisEntangling Algorithmic Recourse), a novel and practical recourse framework that bridges the gap between the IMF and the strong causal assumptions. \texttt{DEAR} generates recourses by disentangling the latent representation of co-varying features from a subset of promising recourse features to capture the main practical recourse desiderata. Our experiments on real-world data corroborate our theoretically motivated recourse model and highlight our framework's ability to provide reliable, low-cost recourse in the presence of feature dependencies.