2025
Solver-Informed RL: Grounding Large Language Models for Authentic Optimization Modeling.
CoRR, May, 2025

PDCS: A Primal-Dual Large-Scale Conic Programming Solver with GPU Enhancements.
CoRR, May, 2025

Beyond O(√T) Regret: Decoupling Learning and Decision-making in Online Linear Programming.
CoRR, January, 2025

An Enhanced Alternating Direction Method of Multipliers-Based Interior Point Method for Linear and Conic Optimization.
INFORMS J. Comput., 2025

2024
Algorithm 1053: SOLNP+: A Derivative-Free Solver for Constrained Nonlinear Optimization.
ACM Trans. Math. Softw., December, 2024

FCT-Net: A dual-encoding-path network fusing atrous spatial pyramid pooling and transformer for pavement crack detection.
Eng. Appl. Artif. Intell., 2024

A Robust Anchor-based Method for Multi-Camera Pedestrian Localization.
CoRR, 2024

Reward Learning From Preference With Ties.
CoRR, 2024

Solving Integrated Process Planning and Scheduling Problem via Graph Neural Network Based Deep Reinforcement Learning.
CoRR, 2024

ORLM: Training Large Language Models for Optimization Modeling.
CoRR, 2024

A Homogenization Approach for Gradient-Dominated Stochastic Optimization.
Proceedings of the Uncertainty in Artificial Intelligence, 2024

Trust Region Methods for Nonconvex Stochastic Optimization beyond Lipschitz Smoothness.
Proceedings of the Thirty-Eighth AAAI Conference on Artificial Intelligence, 2024

Sketched Newton Value Iteration for Large-Scale Markov Decision Processes.
Proceedings of the Thirty-Eighth AAAI Conference on Artificial Intelligence, 2024

Learning to Pivot as a Smart Expert.
Proceedings of the Thirty-Eighth AAAI Conference on Artificial Intelligence, 2024

2023
Pre-trained Mixed Integer Optimization through Multi-variable Cardinality Branching.
CoRR, 2023

Stochastic Dimension-reduced Second-order Methods for Policy Optimization.
CoRR, 2023

Solving Linear Programs with Fast Online Learning Algorithms.
Proceedings of the International Conference on Machine Learning, 2023

2022
JD.com: Operations Research Algorithms Drive Intelligent Warehouse Robots to Work.
INFORMS J. Appl. Anal., 2022

Cardinal Optimizer (COPT) User Guide.
CoRR, 2022

DRSOM: A Dimension Reduced Second-Order Method and Preliminary Analyses.
CoRR, 2022

HDSDP: Software for Semidefinite Programming.
CoRR, 2022

2019
Preface: Special Issue on the Annual International Conference on Combinatorial Optimization and Applications (COCOA).
Theor. Comput. Sci., 2019

Interior-Point Methods Strike Back: Solving the Wasserstein Barycenter Problem.
Proceedings of the Advances in Neural Information Processing Systems 32: Annual Conference on Neural Information Processing Systems 2019, 2019

2018
A tractable discrete fractional programming: application to constrained assortment optimization.
J. Comb. Optim., 2018

A Nonasymptotic Approach to Analyzing Kidney Exchange Graphs.
Oper. Res., 2018

2017
An improved algorithm for the L<sub>2</sub> - L<sub>p</sub> minimization problem.
Math. Program., 2017

Strong NP-Hardness for Sparse Optimization with Concave Penalty Functions.
Proceedings of the 34th International Conference on Machine Learning, 2017

2015
Strong NP-Hardness Result for Regularized $L_q$-Minimization Problems with Concave Penalty Functions.
CoRR, 2015

A Non-asymptotic Approach to Analyzing Kidney Exchange Graphs.
Proceedings of the Sixteenth ACM Conference on Economics and Computation, 2015

2014
Complexity of unconstrained $$L_2-L_p$$ minimization.
Math. Program., 2014

A Note on Appointment Scheduling with Piecewise Linear Cost Functions.
Math. Oper. Res., 2014

An Improved Algorithm for Fixed-Hub Single Allocation Problem.
CoRR, 2014

2012
A genetic algorithm-based method for look-ahead scheduling in the finishing phase of construction projects.
Adv. Eng. Informatics, 2012

2011
A note on the complexity of <i>L</i><sub><i>p</i></sub> minimization.
Math. Program., 2011

On Equivalence of Semidefinite Relaxations for Quadratic Matrix Programming.
Math. Oper. Res., 2011

Geometric rounding: a dependent randomized rounding scheme.
J. Comb. Optim., 2011

The Cost of Cache-Oblivious Searching.
Algorithmica, 2011

2008
Improved bounds on sorting by length-weighted reversals.
J. Comput. Syst. Sci., 2008

2004
Improved bounds on sorting with length-weighted reversals.
Proceedings of the Fifteenth Annual ACM-SIAM Symposium on Discrete Algorithms, 2004

Sorting by Length-Weighted Reversals: Dealing with Signs and Circularity.
Proceedings of the Combinatorial Pattern Matching, 15th Annual Symposium, 2004

2003
Improved approximation algorithms for the freeze-tag problem.
Proceedings of the SPAA 2003: Proceedings of the Fifteenth Annual ACM Symposium on Parallelism in Algorithms and Architectures, 2003