Results 31 to 40 of about 789 (94)

The complete vertex p-center problem

open access: yesEURO Journal on Computational Optimization, 2020
The vertex p-center problem consists of locating p facilities among a set of M potential sites such that the maximum distance from any demand to its closest located facility is minimized.
F.Antonio Medrano
doaj   +1 more source

On stability of Nash equilibrium situations and Pareto optimal situations in finite games [PDF]

open access: yesComputer Science Journal of Moldova, 2003
A non-cooperative finite game of several persons is considered in the case, where payoff functions are linear. Extreme levels of independent perturbations of payoff functions parameters, which remain Nash and Pareto optimality of a situation, are ...
Vladimir A. Emelichev   +1 more
doaj  

Modeling and optimizing the evacuation of hospitals based on the MRCPSP with resource transfers

open access: yesEURO Journal on Computational Optimization, 2016
In this paper, we consider the problem of hospital evacuation and model it as a multi-mode resource-constrained project scheduling problem (MRCPSP) with additional resource transfers and blockings.
Jens Poppenborg, Sigrid Knust
doaj   +1 more source

Discrete concavity and the half-plane property [PDF]

open access: yes, 2009
Murota et al. have recently developed a theory of discrete convex analysis which concerns M-convex functions on jump systems. We introduce here a family of M-concave functions arising naturally from polynomials (over a field of generalized Puiseux series)
Buch A. S.   +4 more
core   +3 more sources

Postoptimal analysis of one lexicographic combinatorial problem with non-linear criteria [PDF]

open access: yesComputer Science Journal of Moldova, 2009
In this article we consider a multicriteria combinatorial problem with ordered MINMIN criteria. We obtain necessary and sufficient conditions of that type of stability to the initial data perturbations for which all lexicographic optima of the original ...
Vladimir A. Emelichev, Olga V. Karelkina
doaj  

A polyhedral approach to the generalized minimum labeling spanning tree problem

open access: yesEURO Journal on Computational Optimization, 2019
The minimum labeling spanning tree problem (MLSTP) is a combinatorial optimization problem that consists in finding a spanning tree in a simple graph G, in which each edge has one label, by using a minimum number of labels.
ThiagoGouveiada Silva   +4 more
doaj   +1 more source

On the rank functions of $\mathcal{H}$-matroids

open access: yes, 2016
The notion of $\mathcal{H}$-matroids was introduced by U. Faigle and S. Fujishige in 2009 as a general model for matroids and the greedy algorithm. They gave a characterization of $\mathcal{H}$-matroids by the greedy algorithm.
Sano, Yoshio
core   +2 more sources

Sink location to find optimal shelters in evacuation planning

open access: yesEURO Journal on Computational Optimization, 2016
The sink location problem is a combination of network flow and location problems: from a given set of nodes in a flow network a minimum cost subset W has to be selected such that given supplies can be transported to the nodes in W.
P. Heßler, H.W. Hamacher
doaj   +1 more source

Optimal capacitated ring trees

open access: yesEURO Journal on Computational Optimization, 2016
We study a new network design model combining ring and tree structures under capacity constraints. The solution topology of this capacitated ring tree problem (CRTP) is based on ring trees which are the union of trees and 1-trees.
Alessandro Hill, Stefan Voß
doaj   +1 more source

Matching ontologies with kernel principle component analysis and evolutionary algorithm

open access: yesDemonstratio Mathematica
Ontology serves as a structured knowledge representation that models domain-specific concepts, properties, and relationships. Ontology matching (OM) aims to identify similar entities across distinct ontologies, which is essential for enabling ...
Xue Xingsi, Ye Miao, Nian Qifeng
doaj   +1 more source

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