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Paper · 1602.02282 · 2016

Ladder Variational Autoencoders

arXiv · PDF · Open in the Atlas

Code that ran

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RepositoryRoleRan
Leozyc-waseda/DeepLearning_Course_Homework pwc_unofficial 3 of 3
addtt/ladder-vae-pytorch pwc_unofficial 0 of 6
FunctionStatusWhere it lives
IOU Ran Leozyc-waseda/DeepLearning_Course_Homework/gen_anchors.py
code served (permissive licence) · get_code("ff92ad8f00e93bbc")
avg_IOU Ran Leozyc-waseda/DeepLearning_Course_Homework/gen_anchors.py
code served (permissive licence) · get_code("1a3fa3dda9a8b100")
convert Ran Leozyc-waseda/DeepLearning_Course_Homework/gen_files.py
code served (permissive licence) · get_code("04bbdadb21f8b94d")
discretized_mix_logistic_loss Not yet run addtt/ladder-vae-pytorch/lib/likelihoods.py
code served (permissive licence) · get_code("02f3a50faf2e52a3")
kl_normal_mc Not yet run addtt/ladder-vae-pytorch/lib/stochastic.py
code served (permissive licence) · get_code("1ab085dba2b341ea")
log_bernoulli Not yet run addtt/ladder-vae-pytorch/lib/likelihoods.py
code served (permissive licence) · get_code("84eb98948d67591f")
log_discretized_logistic Not yet run addtt/ladder-vae-pytorch/lib/likelihoods.py
code served (permissive licence) · get_code("fabc798a2d64531f")
logistic_rsample Not yet run addtt/ladder-vae-pytorch/lib/stochastic.py
code served (permissive licence) · get_code("4686a937eb425646")
sample_from_discretized_mix_logistic Not yet run addtt/ladder-vae-pytorch/lib/stochastic.py
code served (permissive licence) · get_code("be3871d2562a0801")

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Abstract

Variational Autoencoders are powerful models for unsupervised learning. However deep models with several layers of dependent stochastic variables are difficult to train which limits the improvements obtained using these highly expressive models. We propose a new inference model, the Ladder Variational Autoencoder, that recursively corrects the generative distribution by a data dependent approximate likelihood in a process resembling the recently proposed Ladder Network. We show that this model provides state of the art predictive log-likelihood and tighter log-likelihood lower bound compared to the purely bottom-up inference in layered Variational Autoencoders and other generative models. We provide a detailed analysis of the learned hierarchical latent representation and show that our new inference model is qualitatively different and utilizes a deeper more distributed hierarchy of latent variables. Finally, we observe that batch normalization and deterministic warm-up (gradually turning on the KL-term) are crucial for training variational models with many stochastic layers.

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