Explaining Arguments' Strength: Unveiling the Role of Attacks and Supports (Technical Report)

• URL: http://arxiv.org/abs/2404.14304v2
• Date: Fri, 10 May 2024 17:37:43 GMT
• Title: Explaining Arguments' Strength: Unveiling the Role of Attacks and Supports (Technical Report)
• Authors: Xiang Yin, Potyka Nico, Francesca Toni,
• Abstract summary: We propose a novel theory of Relation Attribution Explanations (RAEs) RAEs offer fine-grained insights into the role of attacks and supports in quantitative bipolar argumentation towards obtaining the arguments' strength. We show the application value of RAEs in fraud detection and large language models case studies.
• Score: 13.644164255651472
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Quantitatively explaining the strength of arguments under gradual semantics has recently received increasing attention. Specifically, several works in the literature provide quantitative explanations by computing the attribution scores of arguments. These works disregard the importance of attacks and supports, even though they play an essential role when explaining arguments' strength. In this paper, we propose a novel theory of Relation Attribution Explanations (RAEs), adapting Shapley values from game theory to offer fine-grained insights into the role of attacks and supports in quantitative bipolar argumentation towards obtaining the arguments' strength. We show that RAEs satisfy several desirable properties. We also propose a probabilistic algorithm to approximate RAEs efficiently. Finally, we show the application value of RAEs in fraud detection and large language models case studies.

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