Rethinking ResNets: improved stacking strategies with high-order schemes for image classification

Zhengbo Luo*, Zitang Sun, Weilian Zhou, Zizhang Wu, Sei ichiro Kamata

*この研究の対応する著者

研究成果: Article査読

抄録

Abstract: Various deep neural network architectures (DNNs) maintain massive vital records in computer vision. While drawing attention worldwide, the design of the overall structure lacks general guidance. Based on the relationship between DNN design and numerical differential equations, we performed a fair comparison of the residual design with higher order perspectives. We show that the widely used DNN design strategy, constantly stacking a small design (usually, 2–3 layers), could be easily improved, supported by solid theoretical knowledge and with no extra parameters needed. We reorganise the residual design in higher order ways, which is inspired by the observation that many effective networks can be interpreted as different numerical discretisations of differential equations. The design of ResNet follows a relatively simple scheme, which is Euler forward; however, the situation becomes complicated rapidly while stacking. We suppose that stacked ResNet is somehow equalled to a higher order scheme; then, the current method of forwarding propagation might be relatively weak compared with a typical high-order method such as Runge–Kutta. We propose HO-ResNet to verify the hypothesis on widely used CV benchmarks with sufficient experiments. Stable and noticeable increases in performance are observed, and convergence and robustness are also improved. Our stacking strategy improved ResNet-30 by 2.15% and ResNet-58 by 2.35% on CIFAR-10, with the same settings and parameters. The proposed strategy is fundamental and theoretical and can, therefore, be applied to any network as a general guideline. Graphical abstract: [Figure not available: see fulltext.].

本文言語English
ページ(範囲)3395-3407
ページ数13
ジャーナルComplex and Intelligent Systems
8
4
DOI
出版ステータスPublished - 2022 8月

ASJC Scopus subject areas

  • 人工知能
  • 情報システム
  • 工学(その他)
  • 計算数学

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