Diffusion Alignment as Variational Expectation-Maximization - Lee, Jaewoo; Kim, Minsu; Choi, Sanghyeok; Song, Inhyuck; Yun, Sujin; Kang, Hyeongyu; Shin, Woocheol; Yun, Taeyoung; Om, Kiyoung; Park, Jinkyoo (International Conference on Learning Representations, 2026)