Skip to main content

All Questions

Filter by
Sorted by
Tagged with
1 vote
1 answer
1k views

Is there any difference between an objective function and a value function?

I found the usage of both objective function and value function in the same context. Context #1: In the paper titled Generative Adversarial Nets by Ian J. Goodfellow et al. We simultaneously train G ...
hanugm's user avatar
  • 3,990
0 votes
1 answer
238 views

Does average loss function in GAN training is just an approximation of value function and does not ensure convergence of generator and discriminator?

The value function on which convergence has been proved by the original paper of GAN is $$\min_G \max_DV(D, G) = \mathbb{E}_{x ∼ P_{data}}[\log D(x)] + \mathbb{E}_{z ∼ p_z}[log (1 - D(G(z)))]$$ and ...
hanugm's user avatar
  • 3,990
13 votes
1 answer
14k views

What are the fundamental differences between VAE and GAN for image generation?

Starting from my own understanding, and scoped to the purpose of image generation, I'm well aware of the major architectural differences: A GAN's generator samples from a relatively low dimensional ...
Alexander Soare's user avatar
1 vote
0 answers
134 views

What is the difference between using dense layers as opposed to convolutional layers in my networks when dealing with images?

I am thinking about developing a GAN. What is the difference between using dense layers as opposed to convolutional layers in my networks when dealing with images?
AJ2796's user avatar
  • 11
9 votes
5 answers
13k views

Why is the variational auto-encoder's output blurred, while GANs output is crisp and has sharp edges?

I observed in several papers that the variational autoencoder's output is blurred, while GANs output is crisp and has sharp edges. Can someone please give some intuition why that is the case? I did ...
Trect's user avatar
  • 269
7 votes
1 answer
7k views

Why doesn't VAE suffer mode collapse?

Mode collapse is a common problem faced by GANs. I am curious why doesn't VAE suffer mode collapse?
Trect's user avatar
  • 269