Papers and preprints:

 Ziwei Zhu, Xudong Li, Mengdi Wang, and Anru Zhang, Learning Markov models via lowrank optimization, arXiv:1907.00113, 2019
 Xudong Li, Defeng Sun, and KimChuan Toh, An asymptotically superlinearly convergent semismooth Newton augmented Lagrangian method for Linear Programming, arXiv:1903.09546, 2019
 Liang Chen, Xudong Li, Defeng Sun, and KimChuan Toh, On the equivalence of inexact proximal ALM and ADMM for a class of convex composite programming, Mathematical Programming, in print, arXiv:1803.10803, 2018
 Xudong Li, Defeng Sun, and KimChuan Toh, On the efficient computation of a generalized Jacobian of the projector over the Birkhoff polytope, arXiv:1702.05934, Mathematical Programming, DOI: 10.1007/s1010701813429, 2018
 Xudong Li, Defeng Sun, and KimChuan Toh, A block symmetric GaussSeidel decomposition theorem for convex composite quadratic programming and its applications, Mathematical Programming, 175 (2019), pp. 396–418, Springer Nature SharedIT
 Xudong Li, Defeng Sun, and KimChuan Toh, QSDPNAL: A twophase augmented Lagrangian method for convex quadratic semidefinite programming (with Defeng Sun and KimChuan Toh), Mathematical Programming Computation, 10 (2018), pp. 703–743, arXiv:1512.08872, Springer Nature SharedIT
 Xudong Li, Mengdi Wang, and Anru Zhang, Estimation of Markov chain via rankconstrained likelihood, Proceedings of the 35th International Conference on Machine Learning (ICML), Stockholm, Sweden, PMLR 80:30393048, 2018, Supplementary PDF
 Xudong Li, Defeng Sun, and KimChuan Toh, On efficiently solving the subproblems of a levelset method for fused lasso problems (with Defeng Sun and KimChuan Toh), SIAM Journal on Optimization, 28 (2018), pp. 1842–1866
 Xudong Li, Defeng Sun, and KimChuan Toh, A highly efficient semismooth Newton augmented Lagrangian method for solving Lasso problems (with Defeng Sun and KimChuan Toh), SIAM Journal on Optimization, 28 (2018), pp. 433–458 Best Paper Prize for Young Researchers in Continuous Optimization, ICCOPT 2019 (1 in 3 years)
 Ying Cui, Xudong Li, Defeng Sun, and KimChuan Toh, On the convergence of a majorized ADMM for the linearly constrained convex optimization problems of coupled objective functions, Journal of Optimization Theory and Applications, 169 (2016), pp. 1013–1041
 Xudong Li, Defeng Sun, and KimChuan Toh, A Schur complement based proximal ADMM for convex quadratic conic programming and extensions, Mathematical Programming, 155 (2016), pp. 333–373