西安交通大学徐宗本院士的ppt，关于稀疏优化理论以及L1/2正则化的研究与应用-Xi an Jiaotong University, Academician Xu Zongben ppt, on sparse optimization theory and L1/2 regularization Research and Application

论文 Least Squares Loss for Multi-class (task) Learning via the sparse group Lasso penalty 的算法源代码，是sparse+l1+lq,1的稀疏属性选择算法。- Least Squares Loss for Multi-class (task) Learning via the sparse group Lasso penalty Problem