search query: @author Spielberg, K. / total: 2
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| Author: | Guingard, M. Ryu, C. Spielberg, K. |
| Title: | Model tightening for integrated timber harvest and transportation planning |
| Journal: | European Journal of Operational Research
1998 : DEC 16, VOL. 111:3, p. 448-460 |
| Index terms: | OPERATIONAL RESEARCH TRANSPORT PLANNING |
| Language: | eng |
| Abstract: | Integrated timber harvest and transportation planning problems can be modeled as 0-1 mixed integer programming problems, but initial computations led to large integrality gaps which cannot be overcome easily. In this paper, the authors show how this situation can be substantially improved by a combination of techniques, such as: addition of logical inequalities, lifting of inequalities and careful selection of Branch-and-Bound branching priorities based on a consideration of double-contraction. |
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