The unbounded knapsack problem: given a knapsack of some capacity and a set of items that have a weight and a value, determine the maximum value of items you can place in your knapsack. The number ...

M. Hifi, M. Michrafy, A Reactive Local Search-Based Algorithm for the Disjunctively Constrained Knapsack Problem, The Journal of the Operational Research Society, Vol. 57, No. 6 (Jun., 2006), pp.

These algorithms for the knapsack sharing problem extend the sharing problem algorithm in a companion paper to any piecewise linear, nonlinear, or piecewise nonlinear tradeoff functions. OR ...