SONA: Learning Conditional, Unconditional, and Matching-Aware Discriminator - Takida, Yuhta; Hayakawa, Satoshi; Shibuya, Takashi; Imaizumi, Masaaki; Murata, Naoki; Nguyen, Bac; Uesaka, Toshimitsu; Lai, Chieh-Hsin; Mitsufuji, Yuki (International Conference on Learning Representations, 2026)