MixFlow: Mixture-Conditioned Flow Matching for Out-of-Distribution Generalization. - Andrea Rubbi; Amir Akbarnejad; Mohammad V. Sanian; Aryan Yazdan Parast; Hesam Asadollahzadeh; Arian Amani; Naveed Akhtar; Sarah Cooper; Andrew Bassett; Pietro Liò; Lassi Paavolainen; Sattar Vakili; et al. (CoRR, 2026)