Feasible Action Space Reduction for Quantifying Causal Responsibility in Continuous Spatial Interactions

• URL: http://arxiv.org/abs/2505.17739v1
• Date: Fri, 23 May 2025 11:02:44 GMT
• Title: Feasible Action Space Reduction for Quantifying Causal Responsibility in Continuous Spatial Interactions
• Abstract summary: Feasible Action-Space Reduction (FeAR) proposed as metric for causal responsibility in a grid-world setting with discrete actions.<n>Since real-world interactions involve continuous action spaces, this paper proposes a formulation of the FeAR metric for measuring causal responsibility in space-continuous interactions.
• Score: 2.9998889086656586
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: Understanding the causal influence of one agent on another agent is crucial for safely deploying artificially intelligent systems such as automated vehicles and mobile robots into human-inhabited environments. Existing models of causal responsibility deal with simplified abstractions of scenarios with discrete actions, thus, limiting real-world use when understanding responsibility in spatial interactions. Based on the assumption that spatially interacting agents are embedded in a scene and must follow an action at each instant, Feasible Action-Space Reduction (FeAR) was proposed as a metric for causal responsibility in a grid-world setting with discrete actions. Since real-world interactions involve continuous action spaces, this paper proposes a formulation of the FeAR metric for measuring causal responsibility in space-continuous interactions. We illustrate the utility of the metric in prototypical space-sharing conflicts, and showcase its applications for analysing backward-looking responsibility and in estimating forward-looking responsibility to guide agent decision making. Our results highlight the potential of the FeAR metric for designing and engineering artificial agents, as well as for assessing the responsibility of agents around humans.

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