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Improved results on the 0–1 multidimensional knapsack problem. (English) Zbl 1112.90366
Summary: Geometric Constraint and Cutting planes have been successfully used to solve the 0-1 multidimensional knapsack problem. Our algorithm combines Linear Programming with an efficient tabu search. It gives best results when compared with other algorithms on benchmarks issued from the OR-L${}_{IBRARY}$. Embedding this algorithm in a variables fixing heuristic still improves our previous results. Furthermore difficult sub problems with about 100 variables issued from the 500 original ones could be generated. These small sub problems are always very hard to solve.
##### MSC:
 90C09 Boolean programming 90C27 Combinatorial optimization 90C59 Approximation methods and heuristics 90C10 Integer programming
##### Keywords:
variables fixing; heuristics; linear programming; tabu search