Mechanism works
2026
Quotient-Aligned Flow Matching
Replace the arbitrary labelled target graph in each flow-matching pair by the node permutation that minimizes its Euclidean distance to the source graph. Construct the conditional interpolation and velocity target using this aligned representative, so the model learns transport in graph quotient space rather than wasting capacity on node-order mismatches.
Paper: Gromov-Monge Flow Matching for Equivariant Graph Generation
arXiv:2608.26961