2 papers
cs.IT2026
Fisher Information and the Minimum Mean-Square Error for Locating Closely Spaced Point Sources
Chuling Wen, Jian Lu, Qingtang Jiang +1
We determine the optimal average error of locating closely spaced sources from noisy superpositions of a known smooth response with unknown complex coefficients. Relative phases co…
cs.IT2026
Serial Depth of Adaptive Parallel Sampling: Lower Bounds and Schedules for Masked Diffusion Models
Chuling Wen, Weijie Liang, Jian Lu +1
Masked diffusion models generate sequences in rounds, predicting several masked positions at once. Fewer rounds can accelerate decoding, but sampling positions independently can lo…