大家帮忙推荐一些非凸优化（Nonconvex optimization）的最新研究进展文献？ - 知乎 Provable non-convex projected gradient descent for a class of constrained matrix optimization problems (2016) Finding Low-rank Solutions to Matrix Problems, Efficiently and Provably (2016) Provable Efficient Online Matrix Completion via Non-convex Stochastic Gradient Descent (2016) Fast Algorithms for Robust PCA via Gradient Descent (2016)