A branch and bound algorithm for solution of the "knapsack problem," max ∑vixi where ∑wixi ≤ W and xi = 0, 1, is presented which can obtain either optimal or approximate solutions. Some characteristics of the algorithm are discussed and computational experience is presented. Problems involving 50 items from which approximately 25 items were loaded were solved in an average of 0.07 minutes each by a coded version of this algorithm for the IBM 7094 computer.
Kolesar, Peter. "A branch and bound algorithm for the knapsack problem." Management Science 13, no. 9 (May 1967): 723-735.
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