BioFact-MoE: Biologically Factorized Mixture of Experts for Vision-Language Prognostic Modeling in Hepatocellular Carcinoma. - Junlin Yang; Tian Yu; Nicha C. Dvornek; Yuexi Du; Peiyu Duan; Annabella Shewarega; Lawrence H. Staib; James S. Duncan; Julius Chapiro (CoRR, 2026)