The Master Key Filters Hypothesis: Deep Filters Are General

• URL: http://arxiv.org/abs/2412.16751v2
• Date: Mon, 03 Feb 2025 16:58:12 GMT
• Title: The Master Key Filters Hypothesis: Deep Filters Are General
• Authors: Zahra Babaiee, Peyman M. Kiasari, Daniela Rus, Radu Grosu,
• Abstract summary: Convolutional neural network (CNN) filters become increasingly specialized in deeper layers. Recent observations of clusterable repeating patterns in depthwise separable CNNs (DS-CNNs) trained on ImageNet motivated this paper. Our analysis of DS-CNNs reveals that deep filters maintain generality, contradicting the expected transition to class-specific filters.
• Score: 51.900488744931785
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• Abstract: This paper challenges the prevailing view that convolutional neural network (CNN) filters become increasingly specialized in deeper layers. Motivated by recent observations of clusterable repeating patterns in depthwise separable CNNs (DS-CNNs) trained on ImageNet, we extend this investigation across various domains and datasets. Our analysis of DS-CNNs reveals that deep filters maintain generality, contradicting the expected transition to class-specific filters. We demonstrate the generalizability of these filters through transfer learning experiments, showing that frozen filters from models trained on different datasets perform well and can be further improved when sourced from larger datasets. Our findings indicate that spatial features learned by depthwise separable convolutions remain generic across all layers, domains, and architectures. This research provides new insights into the nature of generalization in neural networks, particularly in DS-CNNs, and has significant implications for transfer learning and model design.

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