Titlebook: Integer Programming and Combinatorial Optimization; 4th International IP Egon Balas,Jens Clausen Conference proceedings 1995 Springer-Verla

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I. Bárány,H. E. Scarf,D. Shallcrosse field.Written by a panel of renowned experts.Includes supp.Diabetes and hypertension have evolved as two of the modern day epidemics affecting millions of people around the world. These two common co-morbidities lead to substantial increase in cardiovascular disease, the major cause of morbidity a

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Cosmopolitan

Nonlinear formulations and improved randomized approximation algorithms for multicut problems,known formulations and valid inequalities as well as several new ones. Through these formulations we establish a connection between the multiway cut and the maximum weighted independent set problem that leads to the study of the tightness of several LP formulations for the multiway cut problem throu

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The interval order polytope of a digraph,ing valid inequalities are presented. These schemes have been used implicitly for several polytopes and they are applied here to the interval order polytope. It is shown that almost all known classes of valid inequalities of the linear ordering polytope can be explained by the two classes derived fr

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神刊

A minimal algorithm for the Bounded Knapsack Problem,y most efficient algorithm for BKP transforms the data instance to an equivalent 0–1 Knapsack Problem, which is solved efficiently through a specialized algorithm. However this paper demonstrates, that the transformation introduces many similar weighted items, resulting in very hard instances of the

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,A framework for tightening 0–1 programs based on extensions of pure 0–1 KP and SS problems,tion from other constraints. Our approach exploits special structures that are frequently encountered in industry, namely knapsack constraints, cliques, covers, variable covers, variable upper bounds and others. We consider 0–1 knapsack and subset-sum problems with clique and cover induced constrain

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