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arXiv 2402.15430cs.CVcs.LG
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面向更大规模鲁棒可解释视觉任务的层级不变性

Hierarchical Invariance for Robust and Interpretable Vision Tasks at Larger Scales

College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics(南京航空航天大学计算机科学与技术学院);College of Cyber Security, Jinan University(暨南大学网络安全学院);School of Cyber Science and Technology, Shenzhen Campus of Sun Yat-sen University(中山大学深圳校区网络空间安全学院)

Shuren Qi, Yushu Zhang, Chao Wang, Zhihua Xia, Xiaochun Cao, Jian Weng

AI总结:

针对现有不变性视觉表示判别力不足的问题,该研究从理论、实践、应用层面系统探究层级不变性,构建可解释的过完备不变量表示,在多类分类与取证任务中验证了其不变性与竞争力,为大规模鲁棒可解释视觉任务提供新方案。

摘要:

开发鲁棒且可解释的视觉系统是迈向可信人工智能的关键一步。在这一领域,一种颇具前景的范式是将任务所需的不变性结构(例如几何不变性)嵌入基础图像表示中。然而,这类不变性表示通常判别能力有限,制约了其在更大规模可信视觉任务中的应用。针对这一开放性问题,我们对层级不变性展开了系统性研究,从理论、实践与应用三个维度对该主题进行探索。在理论层面,我们展示了如何借助类卷积神经网络(CNN)的层级架构构建过完备不变量,且整个过程具备完全可解释性。文中给出了总体框架、具体定义、不变性性质及数值实现方法。在实践层面,我们探讨了如何将该理论框架定制化适配于特定任务。依托过完备性,与任务相关的判别性特征可以以类神经架构搜索(NAS)的方式自适应形成。我们通过纹理、数字及寄生虫分类实验的准确率、不变性和效率结果验证了上述论点。此外,在应用层面,我们探究了该表示在对抗扰动与人工智能生成内容(AIGC)相关的现实取证任务中的表现。这类应用表明,所提出的策略不仅实现了理论上承诺的不变性,即便在深度学习时代也展现出了具有竞争力的判别能力。对于更大规模的鲁棒可解释视觉任务而言,层级不变性表示可被视为传统CNN与不变量的一种有效替代方案。

英文摘要:

Developing robust and interpretable vision systems is a crucial step towards trustworthy artificial intelligence. In this regard, a promising paradigm considers embedding task-required invariant structures, e.g., geometric invariance, in the fundamental image representation. However, such invariant representations typically exhibit limited discriminability, limiting their applications in larger-scale trustworthy vision tasks. For this open problem, we conduct a systematic investigation of hierarchical invariance, exploring this topic from theoretical, practical, and application perspectives. At the theoretical level, we show how to construct over-complete invariants with a Convolutional Neural Networks (CNN)-like hierarchical architecture yet in a fully interpretable manner. The general blueprint, specific definitions, invariant properties, and numerical implementations are provided. At the practical level, we discuss how to customize this theoretical framework into a given task. With the over-completeness, discriminative features w.r.t. the task can be adaptively formed in a Neural Architecture Search (NAS)-like manner. We demonstrate the above arguments with accuracy, invariance, and efficiency results on texture, digit, and parasite classification experiments. Furthermore, at the application level, our representations are explored in real-world forensics tasks on adversarial perturbations and Artificial Intelligence Generated Content (AIGC). Such applications reveal that the proposed strategy not only realizes the theoretically promised invariance, but also exhibits competitive discriminability even in the era of deep learning. For robust and interpretable vision tasks at larger scales, hierarchical invariant representation can be considered as an effective alternative to traditional CNN and invariants.

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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