Expanding Flow Maps

Expanding Flow Maps (EFMs): flow-based generative models with variable output dimensionality

A new arXiv preprint introduces Expanding Generative Flows (EFlows) and Expanding Flow Maps (EFMs), a framework that extends flow-based generative models to handle variable output dimensions and sequence lengths. The approach defines flows between distributions of increasing dimensionality via an expanding interpolant, factoring the generative map into an expand operator and a transport map. The framework covers both continuous and discrete modalities, enabling variable-size graph and variable-length sequence generation, and subsumes existing fixed-canvas flows as a special case.