Accepted Papers

AutoGrow: Automatic Layer Growing in Deep Convolutional Networks

Wei Wen: Duke University; Feng Yan: University of Nevada - Reno; Yiran Chen: Duke University; Hai Li: Duke University


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Depth is a key component of Deep Neural Networks (DNNs), however, designing depth is heuristic and requires many human efforts. We proposeAutoGrow to automate depth discovery in DNNs: starting from a shallow seed architecture,AutoGrow grows new layers if the growth improves the accuracy; otherwise, stops growing and thus discovers the depth. We propose robust growing and stopping policies to generalize to different network architectures and datasets. Our experiments show that by applying the same policy to different network architectures,AutoGrow can always discover near-optimal depth on various datasets of MNIST, FashionMNIST, SVHN, CIFAR10, CIFAR100 and ImageNet. For example, in terms of accuracy-computation trade-off,AutoGrow discovers a better depth combination in \resnets than human experts. OurAutoGrow is efficient. It discovers depth within similar time of training a single DNN. Our code is available at \urlhttps://github.com/wenwei202/autogrow.

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