提出QuXAI框架,解释量子-经典混合模型的特征重要性。
QuXAI: Explainers for Hybrid Quantum Machine Learning Models
- 基于Q-MEDLEY,保留量子变换阶段,分析特征重要性。
- 可区分关键特征与噪声,在经典验证中表现优于主流XAI方法。
- 适合关注量子增强AI可解释性的研究者与开发者。
混合量子-经典机器学习(HQML)模型虽拓展了计算智能边界,但其复杂性常导致黑箱行为,影响透明度与可靠性。现有量子系统可解释性研究尚处初级,尤其缺乏针对采用量化特征编码的HQML架构的鲁棒全局与局部解释方法。本文聚焦此空白,提出QuXAI框架,基于Q-MEDLEY——一种用于解释此类混合系统的特征重要性工具。该框架构建包含量子特征映射的HQML模型,并利用Q-MEDLEY结合基于特征的推理,保留量子变换阶段,可视化归因结果。实验表明,Q-MEDLEY能有效识别HQML模型中的关键经典特征,分离噪声,在经典验证设置中性能媲美主流XAI技术。消融实验证明了Q-MEDLEY复合结构的优势。本工作为提升HQML模型的可解释性与可靠性提供了路径,推动更安全、负责任的量子增强人工智能应用。代码与实验已开源:https://github.com/GitsSaikat/QuXAI。
原文摘要 · Abstract (English)
The emergence of hybrid quantum-classical machine learning (HQML) models opens new horizons of computational intelligence but their fundamental complexity frequently leads to black box behavior that undermines transparency and reliability in their application. Although XAI for quantum systems still in its infancy, a major research gap is evident in robust global and local explainability approaches that are designed for HQML architectures that employ quantized feature encoding followed by classical learning. The gap is the focus of this work, which introduces QuXAI, an framework based upon Q-MEDLEY, an explainer for explaining feature importance in these hybrid systems. Our model entails the creation of HQML models incorporating quantum feature maps, the use of Q-MEDLEY, which combines feature based inferences, preserving the quantum transformation stage and visualizing the resulting attributions. Our result shows that Q-MEDLEY delineates influential classical aspects in HQML models, as well as separates their noise, and competes well against established XAI techniques in classical validation settings. Ablation studies more significantly expose the virtues of the composite structure used in Q-MEDLEY. The implications of this work are critically important, as it provides a route to improve the interpretability and reliability of HQML models, thus promoting greater confidence and being able to engage in safer and more responsible use of quantum-enhanced AI technology. Our code and experiments are open-sourced at: https://github.com/GitsSaikat/QuXAI
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