Method for the Solution of the Multi-Dimensional 0/1 Knapsack Problem (Classic Reprint)
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Excerpt from Method for the Solution of the Multi-Dimensional 0/1 Knapsack Problem
In the knapsack problem, given the desirability of each of a number of items, one seeks to find that subset which satisfies a constraint on total weight. The multi-dimensional variant imposes constraints on addi tional variables of the items, the specification means that an item is either taken or not, i.e., multiples of the same item are not con sidered, except possibly indirectly. Traditionally the l-dimensional knapsack problem is solved by means of dynamic programming. The multi dimensional problem is usually reduced to a one-dimensional one by use of Lagrangian Multipliers which, however, do not generally yield the exact solution to the problem posed. The present paper considers methods for obtaining the exact solution to the problem, and not an approximate one. Additional algorithms are developed which are applied within a dynamic programming framework. Given these, the object is to obtain solutions efficiently, and in attaining this goal heuristic methods are employed. Efficiency of the methods is based upon the use of an inter active computer system in which the heuristics of the problem solver are applied and changed as the character of the solution process evolves. The project was conducted with the Compatible Time Sharing System of Project mac. The problem arises in the context of capital budgeting, but has obvious applications in a variety of other areas.
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