cs.AI updates on arXiv.org 08月06日
From SHAP to Rules: Distilling Expert Knowledge from Post-hoc Model Explanations in Time Series Classification
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本文提出一种将机器学习模型对时间序列分类的解释转换为结构化规则的方法,通过可视化技术优化解释,提高可解释性和决策透明度。

arXiv:2508.01687v1 Announce Type: cross Abstract: Explaining machine learning (ML) models for time series (TS) classification is challenging due to inherent difficulty in raw time series interpretation and doubled down by the high dimensionality. We propose a framework that converts numeric feature attributions from post-hoc, instance-wise explainers (e.g., LIME, SHAP) into structured, human-readable rules. These rules define intervals indicating when and where they apply, improving transparency. Our approach performs comparably to native rule-based methods like Anchor while scaling better to long TS and covering more instances. Rule fusion integrates rule sets through methods such as weighted selection and lasso-based refinement to balance coverage, confidence, and simplicity, ensuring all instances receive an unambiguous, metric-optimized rule. It enhances explanations even for a single explainer. We introduce visualization techniques to manage specificity-generalization trade-offs. By aligning with expert-system principles, our framework consolidates conflicting or overlapping explanations - often resulting from the Rashomon effect - into coherent and domain-adaptable insights. Experiments on UCI datasets confirm that the resulting rule-based representations improve interpretability, decision transparency, and practical applicability for TS classification.

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相关标签

时序分类 机器学习 模型解释 可解释性
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