Visual Generative Models

Hi everyone,

As I mentioned in today's tutorial, those who want to participate in the project phase should register for it through CMS latest by 18.11.2026. The registration is already open now, so you can register right away. I will also upload the presentation about the project phase to CMS for more details. 

Hi everyone,

First of all, I've uploaded the PDF version of the slides for today's tutorial, as some of you requested.

Second, we had a discussion about two-step flow model sampling and whether we end up at the mean of the target distribution, which was 0 in our example with equally likely targets (+3 and −3).

The answer depends on the step size we take. At (t=0), the model predicts an instantaneous velocity pointing toward the mean of the target distribution. If we take a full Euler step (Delta t=1), we end up exactly at the mean, regardless of our initially sampled noise.

However, in two-step sampling, we usually take a step of size (Delta t=0.5). This means multiplying the predicted velocity by 0.5 and adding it to our current position. We therefore only move halfway toward the mean, rather than reaching it, unless our initial noise sample was already 0.

We then query the model again at (t=0.5), using our new position (z_{0.5}), to predict an updated velocity and take another step of size 0.5.

I hope this clarifies the confusion. If not, you know where and when to find us :)

Below are the office hours for myself, Hevra, and our tutor, Umar. If you have individual questions, you can visit us during the office hours. However, if you have questions which might also concern other students, then please post them in CMS Forum so we won't have to reply individually to common questions. 

 

Office Hours:

 

Hevra Petekkaya:

Thursday, 2 pm - 3 pm (This week, 15th of Oct, not available for the office hour)

Location: MPI-INF (E1 4) 6th floor. Room 629

 

Muhammad Umar Javed - 

Wednesday, 2 pm - 3 pm

Location: MPI-INF (E1 4) 6th floor. Room 611

There was the ask if we can switch the lecture room to have tables at the seats.
There currently is no other one available that is large enough so we will stay in the same room until further notice.

We might reconsider later but would have a vote first, if a different one would be preferred by the majority.