TEST-TIME SCALING IN DIFFUSION LLMS VIA HIDDEN SEMI-AUTOREGRESSIVE EXPERTS - Lee, Jihoon; Moon, Hoyeon; Zhai, Kevin; Chithanar, Arun; Sahu, Anit Kumar; Kar, Soummya; Lee, Chul; Chakraborty, Souradip; Bedi, Amrit (International Conference on Learning Representations, 2026)