statistical inference and convex optimization
convex
over-lapping structure and non-overlapping convex optimization
group-wise soft thresholding
convex but non-smooth functions and can be solved by FCSA
constrainted overlapping group minimization to unconstrainted problem by Lagrangian method
方向全变分 （directional total variation）
非局部全变分 (nonlocal total variation)
联合全变分 (joint total variation)