Solving a known MILP with CP-SAT proves optimal for all 4,320 dense benchmark instances, averages 1.3 seconds, and stays competitive on sparse instances with a 0.7 percent average gap.
Heuristic and exact algo- rithms for the disjunctively constrained knapsack problem,
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On Solving the Knapsack Problem with Conflicts
Solving a known MILP with CP-SAT proves optimal for all 4,320 dense benchmark instances, averages 1.3 seconds, and stays competitive on sparse instances with a 0.7 percent average gap.