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Dr. Jeff Beck

๐Ÿ‘ค Speaker
455 total appearances

Appearances Over Time

Podcast Appearances

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

Good examples of this are like a variational autoencoder.

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

A variational autoencoder, I think, is a

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

is the best example of the most commonly used energy-based model out there.

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

Why?

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

Because you have an encoder network, you have a decoder network, right?

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

And your cost function is based on the difference between inputs and outputs, right?

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

So that's just like a, that's fine.

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

That's still a regular, but it also is how Gaussian, and it, well, it depends on what flavor of V8, but you also have some part of your cost function is a function of the actual internal representation, right?

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

In a traditional VAE, it's how Gaussian is.

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

You want that internal representation to be as Gaussian as possible.

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

If it's a VQVAE, then it's like mixture of Gaussians, but it's still like a cost function that is applied on the internal states as well as on the inputs and outputs.

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

Yeah.

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

Yeah, you're treating some of the weights of your model as if they're latent variables.

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

Because when you show a new input, you're allowed to change some of the weights without looking at the output.

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

And so what are you doing?

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

Well, you're treating the weights as latents.

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

Now, I think that, which makes it a great trick, in my opinion.

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

It's like, oh, great.

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

Yeah, they're moving in the direction of energy-based models.

Machine Learning Street Talk (MLST)
VAEs Are Energy-Based Models? [Dr. Jeff Beck]

I love it.