7a53928fa4dd31e82c6ef826f341daec-AuthorFeedback.pdf

We greatly appreciate the reviewers' effort and helpful comments. Comment 1: "The significance of the proposed method is not very clear..." It also has great theoretical significance in the optimization area. Though the convergence rate of this method could be suboptimal, it's a practical way to In addition, [6] shows some examples of saddle point algorithms where projection onto the constrain sets is hard. Comment 2: "Why do we consider nuclear norm constraint for this classification problem?" Response 3: We find that this paper does not have section 5.4 and 5.6. Also, it is irrelevant to our paper.