Notes on generative modeling: flow matching, diffusion, optimal transport and Schr{ö}dinger bridge

2026-06-29Machine Learning

Machine Learning
AI summary

The authors explain the main mathematical ideas behind several methods used to create generative models, which are techniques to generate new data similar to a given dataset. They highlight how optimal transport, a way to match different data distributions efficiently, relates to existing approaches like the Schrödinger bridge and flow matching methods. Their notes help connect these different concepts within generative modeling.

Generative modelingOptimal transportSchrödinger bridgeFlow matchingProbability distributionsMathematical principlesData generationTransport theory
Authors
Titouan Vayer
Abstract
These notes recapitulate the high level mathematical principles behind different techniques for generative modeling. I show the connections between optimal transport and standard techniques such as Schr{ö}dinger bridge and flow matching.