Article ID: | iaor20043216 |
Country: | South Korea |
Volume: | 28 |
Issue: | 4 |
Start Page Number: | 191 |
End Page Number: | 198 |
Publication Date: | Dec 2003 |
Journal: | Journal of the Korean ORMS Society |
Authors: | Hong Sung-Pil, Park Bum-Hwan |
Keywords: | knapsack problem |
The generalized knapsack problem or gknap is the combinatorial optimization problem of optimizing a nonnegative linear function over the integral hull of the intersection of a polynomially separable 0–1 polytope and a knapsack constraint. The knapsack, the restricted shortest path, and the constrained spanning tree problem are a partial list of gknap. More interestingly, all the problems that are known to have a fully polynomial approximation scheme, or FPTAS are gknap. We establish some necessary and sufficient conditions for a gknap to admit an FPTAS. To do so, we recapture the standard scaling and approximate binary search techniques in the framework of gknap. This also enables us to find a weaker sufficient condition than the strong