How good is my story? Towards quantitative metrics for evaluating LLM-generated XAI narratives

• URL: http://arxiv.org/abs/2412.10220v1
• Date: Fri, 13 Dec 2024 15:45:45 GMT
• Title: How good is my story? Towards quantitative metrics for evaluating LLM-generated XAI narratives
• Authors: Timour Ichmoukhamedov, James Hinns, David Martens,
• Abstract summary: A rapidly developing application of LLMs in XAI is to convert quantitative explanations into user-friendly narratives. We propose a framework and explore several automated metrics to evaluate LLM-generated narratives.
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• Abstract: A rapidly developing application of LLMs in XAI is to convert quantitative explanations such as SHAP into user-friendly narratives to explain the decisions made by smaller prediction models. Evaluating the narratives without relying on human preference studies or surveys is becoming increasingly important in this field. In this work we propose a framework and explore several automated metrics to evaluate LLM-generated narratives for explanations of tabular classification tasks. We apply our approach to compare several state-of-the-art LLMs across different datasets and prompt types. As a demonstration of their utility, these metrics allow us to identify new challenges related to LLM hallucinations for XAI narratives.

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