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arXiv 2408.11552cs.AI
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可解释深度学习框架用于人类活动识别

Explainable Deep Learning Framework for Human Activity Recognition

Karlsruhe Institute of Technology(卡尔斯鲁厄理工学院)

Yiran Huang, Yexu Zhou, Haibin Zhao, Till Riedel, Michael Beigl

AI总结:

针对HAR中传统解释方法失效且耗时的问题,提出一种模型无关的竞争性数据增强框架,以提升可解释性且不损害性能。

摘要:

在人类活动识别(HAR)领域,集成可解释人工智能(XAI)已成为阐明复杂模型决策过程的关键需求,从而促进透明度和信任。传统的解释方法如类激活映射(CAM)和注意力机制,虽然在各种情境下能有效突出对决策至关重要的区域,但在HAR中却显得不足。这种不足源于HAR数据固有的抽象性质,使得这些解释变得晦涩难懂。相比之下,针对时间序列的最先进的事后解释技术可以从其他角度解释模型。然而,这需要额外的努力。生成一个解释通常需要10到20秒。为了克服这些挑战,我们提出了一种新颖的、模型无关的框架,通过策略性地使用竞争性数据增强来增强HAR模型的可解释性和有效性。这种创新方法不依赖于任何特定的模型架构,从而拓宽了其在各种HAR模型中的适用性。通过实施竞争性数据增强,我们的框架提供了对模型决策的直观且可访问的解释,从而在不牺牲性能的情况下显著推进了HAR系统的可解释性。

英文摘要:

In the realm of human activity recognition (HAR), the integration of explainable Artificial Intelligence (XAI) emerges as a critical necessity to elucidate the decision-making processes of complex models, fostering transparency and trust. Traditional explanatory methods like Class Activation Mapping (CAM) and attention mechanisms, although effective in highlighting regions vital for decisions in various contexts, prove inadequate for HAR. This inadequacy stems from the inherently abstract nature of HAR data, rendering these explanations obscure. In contrast, state-of-th-art post-hoc interpretation techniques for time series can explain the model from other perspectives. However, this requires extra effort. It usually takes 10 to 20 seconds to generate an explanation. To overcome these challenges, we proposes a novel, model-agnostic framework that enhances both the interpretability and efficacy of HAR models through the strategic use of competitive data augmentation. This innovative approach does not rely on any particular model architecture, thereby broadening its applicability across various HAR models. By implementing competitive data augmentation, our framework provides intuitive and accessible explanations of model decisions, thereby significantly advancing the interpretability of HAR systems without compromising on performance.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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