Identity Mappings in Deep Residual Networks

author: Xiangyu Zhang, Xi'an Jiaotong University
published: Oct. 24, 2016,   recorded: October 2016,   views: 35
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Description

Deep residual networks have emerged as a family of extremely deep architectures showing compelling accuracy and nice convergence behaviors. In this paper, we analyze the propagation formulations behind the residual building blocks, which suggest that the forward and backward signals can be directly propagated from one block to any other block, when using identity mappings as the skip connections and after-addition activation. A series of ablation experiments support the importance of these identity mappings. This motivates us to propose a new residual unit, which makes training easier and improves generalization. We report improved results using a 1001-layer ResNet on CIFAR-10 (4.62% error) and CIFAR-100, and a 200-layer ResNet on ImageNet. Code is available at https://github.com/KaimingHe/resnet-1k-layers.

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Download slides icon Download slides: eccv2016_zhang_residual_networks.pdf (5.6┬áMB)


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