Skip to content
Sign in

Films · Computer science · Machine learning

Prof. Dr. Dirk Schieborn

Applied Mathematics 3 · Reutlingen University

Lecture film · Applied Mathematics 3

Fog, Kangaroo, Neighbours: How a Model Learns and Decides

Lecture film · Applied Mathematics 3

Fog, Kangaroo, Neighbours: How a Model Learns and Decides

Prof. Dr. Dirk Schieborn

Applied Mathematics 3 · Reutlingen University

We choose the shape; the data set the knobs. Gradient descent finds the setting in the fog, step by step. And in classification: a border should hit the future, not every old point.

heyprof.app/f/am3-nebel-nachbarn-en

More films: Signature · Prof. Dr. Dirk Schieborn

0:03
−5:57
Chapter 1 · Shape and knobs

Try the app yourself

We store questions without any link to you; selected ones appear anonymously as frequent questions.

Fog, Kangaroo, Neighbours: How a Model Learns and Decides

Prof. Dr. Dirk SchiebornApplied Mathematics 3 · Reutlingen University
Watch on YouTube

NewNov 10, 2026 · 7 chapters

An explainer film in seven chapters, made from a real lecture: a model as a shape with knobs, gradient descent as a ball rolling through the fog into the valley of the smallest error, the learning rate between snail and kangaroo, ski tracks for bias and variance, a bank deciding on loans, a separating plane in space, and k nearest neighbours. Pause anywhere and ask.

How a film works on heyprof

Every film here listens. Pause it, ask it questions and let it continue with your own examples.

  1. PauseTap pause or press the space bar. The film waits right at that moment.
  2. AskTap “Ask” and type what you want to know. The answer comes inside the film, with picture and voice.
  3. Steer itTell it what to show, for example “Do this with z = 2 − 3i”. The film sets up the app and works it out.
  4. Try it yourselfWhile it is paused, drag points and sliders yourself. “Continue” takes you back into the film.

Without an account: five questions per visit. With an account you can also ask by voice.

Comments