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math.OC2026
Log-Driven Semantic Tuning for Mixed Integer Programming Solvers
Zhengzhong Ricky You, Kaizhao Sun, Zeping Min +2
Automated configuration of mixed-integer programming (MIP) solvers largely relies on black-box optimization. Each trial requires an expensive solver run and provides only a scalar…
math.OC2026
A Dual-Guided Column-Generation-Based Matheuristic for Integrated Railroad Blocking
Yida Xu, Zhengzhong Ricky You, Baichuan Mo
Integrated railroad blocking is a central planning problem in freight railway operations, which requires coordinated decisions on block design, blocking sequences, and block routin…
math.OC2026
Learned Pairwise Deep Dual-Optimal Inequalities for Stabilizing Column Generation
Zhengzhong Ricky You, Bo Tang, Haoran Liu +1
Column generation (CG) is central to many large-scale optimization algorithms, including branch-price-and-cut methods for vehicle routing problems, but unstable dual solutions can…