须要查询的东西

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)