Pruning Randomly Initialized Neural Networks with Iterative Randomization

by Daiki Chijiwa*, Shin’ya Yamaguchi, Yasutoshi Ida, Kenji Umakoshi, Tomohiro Inoue

ArXiv: https://arxiv.org/abs/2106.09269

Requirements

To install requirements (for Python 3.7 & NVIDIA CUDA 10.2):

pip install -r requirements.txt

Usage

python main.py <command> <config> <exp_name>

• <command> is one of train, test, and parallel. train and test can be used to train/test single model, and parallel can be used to reproduce our experiments or to search hyperparameters.
• <config> is the filename of a YAML file. For this, we have config.yaml.
• <exp_name> is one of the keys defined in the <config> file.

Train Single Model

To train a network, we can simply execute train command with <exp_name> in <config> file. For example, to train ResNet18 on CIFAR-10 with SGD/edge-popup/IteRand, run the following commands:

python main.py train config.yaml cifar10_resnet18_ku_sgd

python main.py train config.yaml cifar10_resnet18_sc_edgepopup

python main.py train config.yaml cifar10_resnet18_sc_iterand

In the end of experiments, the program automatically evaluate the model on test dataset.

NOTE: We should not use/see this final result for searching hyperparameters. During our research, the final evaluation on test set was conducted only after fixing hyperparamters.

Reproduce Experimental Results

For each method used in figures in our paper, we provide the corresponding experimental setting as figure<number>_<hoge> in config.yaml. We can run the experiments by parallel command:

python main.py parallel config.yaml figure<number>_<hoge>

For example, the results for Conv6 w/ SGD on CIFAR-10 (in Figure 2) is obtained by:

python main.py parallel config.yaml figure2_conv6_ku_sgd

In the end of experiments, we can check the final results by:

python utils/test_info.py __outputs__/figure2_conv6_ku_sgd/ --epoch=99

To specify some hyperparameters in parallel_grid option in figure<number>_<hoge> experiment, we can use train command with command line options like:

python main.py train config.yaml figure2_resnet18_sc_iterand --model.config_name=resnet18x0.5 --conv_sparsity=0.6 --rerand_freq=300 --rerand_lambda=0.1 --weight_decay=0.0005 --seed=1