crvae's Introduction

CR-VAE

Official code release for Consistency Regularization for VAEs, NeurIPS 2021.

If there are any questions, please email: [email protected]. Github issues are not checked often, and may be missed.

Installation

  git clone https://github.com/sinhasam/CRVAE.git
  cd CRVAE
  pip3 install -e .

Usage

Basic usage of the CR-VAE API, that can be added to your favorite VAE variant and training:

  from CRVAE import CRVAE
  
  ... data loading
  
  crvae = CRVAE(gamma=self.gamma, beta_1=self.beta_1, beta_2=self.beta_2)
  loss, log = crvae.calculate_loss(model, images, augmented_images)
  loss.backward()
  
  ... optimizer step

To use base hyperparameters, simply use

  from CRVAE import CRVAE
  
  ... data loading
  
  loss, logs = CRVAE().calculate_loss(model, images, augmented_images)
  loss.backward()
  
  ... optimizer step

There are two simple VAE architechtures implemented but can be easily extended.

To use the architectures:

from CRVAE.models import CNNVAE, MLPVAE

cnn_model = CNNVAE(in_channels=3)
mlp_model = MLPVAE(latent_dim=32)

There are few image augmenatation policies implemented which can be used as:

from CRVAE.augmentations import get_augmentation

simple_augmentation = get_augmentation('simple')
large_augmentation_normalize = get_augmentation('large', normalize=True)
large_color_jitter_augmentation = get_augmentation('large_jitter', normalize=True)
# vertical flip might not be suitable for all datasets since it assumes data symmetry
large_vertical_flip = get_augmentation('large_vertical_flip', normalize=True)
...

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