Hard cases of the multifacility location problem [PDF]
Let μ be a rational-valued metric on a finite set T. We consider (a version of) the multifacility location problem: given a finite set V⊇T and a function c:V2→Z+, attach each element x∈V−T to an element γ(x)∈T minimizing ∑c(xy)μ(γ(x)γ(y)):xy∈V2, letting ...
Karzanov, Alexander V.
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The minimum cost multicommodity flow problem in dynamic networks and an algorithm for its solving [PDF]
The dynamic version of the minimum cost multicommodity flow problem that generalizes the static minimum cost multicommodity flow problem is formulated and studied.
Maria A. Fonoberova, Dmitrii D. Lozovanu
doaj
An approximation algorithm for the generalized minimum spanning tree problem with bounded cluster size [PDF]
Given a complete undirected graph with the nodes partitioned into m node sets called clusters, the Generalized Minimum Spanning Tree problem denoted by GMST is to find a minimum-cost tree which includes exactly one node from each cluster.
Kern, W., Pop, P.C., Still, G.J.
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Polynomial Time Algorithm for Determining Max-Min Paths in Networks and Solving Zero Value Cyclic Games [PDF]
We study the max-min paths problem, which represents a game version of the shortest and the longest paths problem in a weighted directed graph. In this problem the vertex set V of the weighted directed graph G=(V,E) is divided into two disjoint subsets ...
Dmitrii D. Lozovanu
doaj
Monotone properties of random geometric graphs have sharp thresholds
Random geometric graphs result from taking $n$ uniformly distributed points in the unit cube, $[0,1]^d$, and connecting two points if their Euclidean distance is at most $r$, for some prescribed $r$.
Goel, Ashish+2 more
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Optimal Control of Sweeping Processes in Robotics and Traffic Flow Models [PDF]
The paper is mostly devoted to applications of a novel optimal control theory for perturbed sweeping/Moreau processes to two practical dynamical models.
Colombo, Giovanni+2 more
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The generalized minimum spanning tree polytope and related polytopes [PDF]
The Generalized Minimum Spanning Tree problem denoted by GMST is a variant of the classical Minimum Spanning Tree problem in which nodes are partitioned into clusters and the problem calls for a minimum cost tree spanning at least one node from each ...
Pop, P.C.
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An efficient algorithm for critical circuits and finite eigenvectors in the max-plus algebra [PDF]
We consider the eigenvalue problem in the max-plus algebra for matrices in {−∞∪R}n×n but with eigenvectors in Rn. The problem is relaxed to a linear optimization (LO) problem of which the dual problem is solved by finding a maximal average weight circuit
Olsder, Geert-Jan+2 more
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A Parametric Network Approach for Concepts Hierarchy Generation in Text Corpus
The article presents a preflow approach for the parametric maximum flow problem, derived from the rules of constructing concepts hierarchy in text corpus.
Sângeorzan L. S.+2 more
doaj +1 more source
An ISS Small-Gain Theorem for General Networks
We provide a generalized version of the nonlinear small-gain theorem for the case of more than two coupled input-to-state stable (ISS) systems. For this result the interconnection gains are described in a nonlinear gain matrix and the small-gain ...
A Berman+24 more
core +5 more sources