https://towardsdatascience.com/an-overview-of-resnet-and-its-variants-5281e2f56035

University of Michigan - Ann Arbor

1. ResNeXt
2. Densely Connected CNN
3. Deep Network with Stochastic Depth


Recent Variants of ResNets

An Overview of ResNet and its Variants

Xie et al.  proposed a variant of ResNet that is codenamed ResNeXt with the following building block:
This may look familiar to you as it is very similar to the Inception module of  GoogleNet, they both follow the split-transform-merge paradigm, except in this variant, the outputs of different paths are merged by adding them together, while in  GoogleNet they are depth-concatenated. Another difference is that in  GoogleNet, each path is different (1x1, 3x3 and 5x5 convolution) from each other, while in this architecture, all paths share the same topology.

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