On Partly Smoothness, Activity Identification and Faster Algorithms of $L_1$ over $L_2$ Minimization

Min Tao, Xiao-Ping Zhang, Zi-Hao Xia

The $L_1/L_2$ norm ratio arose as a sparseness measure and attracted a considerable amount of attention due to three merits: (i) sharper approximations of $L_0$ compared to the $L_…