Results 31 to 40 of about 737 (80)
Sink location to find optimal shelters in evacuation planning
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
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
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
The maximum flow in dynamic networks [PDF]
The dynamic maximum flow problem that generalizes the static maximum flow problem is formulated and studied. We consider the problem on a network with capacities depending on time, fixed transit times on the arcs, and a given time horizon.
Maria A. Fonoberova, Dmitrii D. Lozovanu
doaj
Covering compact metric spaces greedily
A general greedy approach to construct coverings of compact metric spaces by metric balls is given and analyzed. The analysis is a continuous version of Chvatal's analysis of the greedy algorithm for the weighted set cover problem.
Rolfes, Jan Hendrik, Vallentin, Frank
core +1 more source
Intersection cuts from multiple rows: a disjunctive programming approach
We address the issue of generating cutting planes for mixed integer programs from multiple rows of the simplex tableau with the tools of disjunctive programming.
Egon Balas, Andrea Qualizza
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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.
core +1 more source
Automatic boomerang attacks search on Rijndael
Boomerang attacks were introduced in 1999 by Wagner (The boomerang attack. In: Knudsen LR, editor. FSE’99. vol. 1636 of LNCS. Heidelberg: Springer; 1999. p.
Rouquette Loïc +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.
core +1 more source
The generalized directed rural postman problem is an arc routing problem with many interesting real-life applications, such as routing for meter reading. In this application, a vehicle with a receiver travels through a series of neighborhoods.
Thais Ávila +3 more
doaj +1 more source

