dantzig-wolfe

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spoorendonk / mcfcg

Column generation for minimum-cost multicommodity flow with path- and tree-based Dantzig-Wolfe decompositions

optimization linear-programming network-flow operations-research branch-and-price column-generation lagrangian-relaxation multicommodity-flow dantzig-wolfe pricing-problem

Updated Oct 30, 2026
C++

Zhengzhong-You / IRBP

Star

Research code for integrated railroad blocking: DG-CGM matheuristics, ARC/DW benchmarks, 190 instances, and reproducible experiments.

cpp reproducible-research gurobi logistics operations-research combinatorial-optimization network-design mixed-integer-programming column-generation matheuristic freight-transportation dantzig-wolfe railway-optimization railroad-blocking

Updated Oct 30, 2026
C++

Zhengzhong-You / LDST

Star

Log-driven LLM tuning of SCIP for mixed-integer optimization, with solver-log analysis, scalar-feedback baselines, and a reproducible 215-instance benchmark.

Updated Oct 30, 2026
Python

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