Dynamic Explanation Emphasis in Human-XAI Interaction with Communication Robot

• URL: http://arxiv.org/abs/2403.14550v1
• Date: Thu, 21 Mar 2024 16:50:12 GMT
• Title: Dynamic Explanation Emphasis in Human-XAI Interaction with Communication Robot
• Authors: Yosuke Fukuchi, Seiji Yamada,
• Abstract summary: DynEmph is a method for a communication robot to decide where to emphasize XAI-generated explanations with physical expressions. It predicts the effect of emphasizing certain points on a user and aims to minimize the expected difference between predicted user decisions and AI-suggested ones.
• Score: 2.6396287656676725
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Communication robots have the potential to contribute to effective human-XAI interaction as an interface that goes beyond textual or graphical explanations. One of their strengths is that they can use physical and vocal expressions to add detailed nuances to explanations. However, it is not clear how a robot can apply such expressions, or in particular, how we can develop a strategy to adaptively use such expressions depending on the task and user in dynamic interactions. To address this question, this paper proposes DynEmph, a method for a communication robot to decide where to emphasize XAI-generated explanations with physical expressions. It predicts the effect of emphasizing certain points on a user and aims to minimize the expected difference between predicted user decisions and AI-suggested ones. DynEmph features a strategy for deciding where to emphasize in a data-driven manner, relieving engineers from the need to manually design a strategy. We further conducted experiments to investigate how emphasis selection strategies affect the performance of user decisions. The results suggest that, while a naive strategy (emphasizing explanations for an AI's most probable class) does not necessarily work better, DynEmph effectively guides users to better decisions under the condition that the performance of the AI suggestion is high.

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