due to the fact that most of these algorithms mainly focus on solving a second order loss
function, eg, mean square error (MSE), which will magnify the effect from occlusion parts. In
this paper, we proposed a kernel non-second order loss function for sparse representation
(KNS-SR) to recognize or restore partially occluded facial images, which both take the
advantages of the correntropy and the non-second order statistics measurement. The …