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train ResNet on ImageNet with Caffe

All models are trained on 4 GPUs with a minibatch size of 128. Testing is turned off during training due to memory limit(at least 12GB is require). The LMDB data is obtained from the official caffe imagenet tutorial

To train a network, use train.sh. For example, train resnet-50 with gpu 0,1,2,3:

#set caffe path in train.sh
mkdir resnet_50/logs
mkdir resnet_50/snapshot
./train.sh 0,1,2,3 resnet_50 resnet_50_

For better training results, please install my Caffe fork, since the official Caffe ImageData layer doesn't support original paper's augmentation (resize shorter side to 256 then crop to 224x224). Use my 224x224 mean image bgr.binaryproto accordingly
See resnet_50/ResNet-50-test.prototxt ImageData layer for details

resnet-50

use resnet_50/ResNet-50-test.prototxt for training and validation
(new) We've release a 2X accelerated ResNet-50 caffemodel using channel-pruning

resnet-32

This is a bottleneck architecture,
Since there's no strong data augmentation and 10-crop test in caffe, the results maybe a bit low.
test accuracy: accuracy@1 = 0.67892, accuracy@5 = 0.88164
training loss for resnet-32 is shown below:
the trained model is provided in release a

Other models on Caffe

Xception-Caffe
ResNet-Cifar10-Caffe

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train resnet on imagenet from scratch with caffe

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