Results 1 to 10 of about 1,485,891 (169)

Multi-objective database queries in combined knapsack and set covering problem domains [PDF]

open access: yesJournal of Big Data, 2021
Database queries are one of the most important functions of a relational database. Users are interested in viewing a variety of data representations, and this may vary based on database purpose and the nature of the stored data.
Sean A. Mochocki   +3 more
doaj   +2 more sources

The Angular Set Covering Problem

open access: yesIEEE Access, 2023
We present an innovative extension of the Set Covering Problem, transitioning from a traditional radial covering to an angular covering structure. The decisions are based on locating the facilities and identifying the directional servers installed in ...
Fredy Barriga-Gallegos   +2 more
doaj   +2 more sources

Application of the Artificial Bee Colony Algorithm for Solving the Set Covering Problem [PDF]

open access: yesThe Scientific World Journal, 2014
The set covering problem is a formal model for many practical optimization problems. In the set covering problem the goal is to choose a subset of the columns of minimal cost that covers every row.
Broderick Crawford   +3 more
doaj   +2 more sources

A Surprisal-Based Greedy Heuristic for the Set Covering Problem

open access: yesAlgorithms, 2023
In this paper we exploit concepts from Information Theory to improve the classical Chvatal greedy algorithm for the set covering problem. In particular, we develop a new greedy procedure, called Surprisal-Based Greedy Heuristic (SBH), incorporating the ...
Tommaso Adamo   +3 more
doaj   +1 more source

Set Covering Problem in Transport Nets Expanding Models [PDF]

open access: yesTransactions of the VŠB-Technical University of Ostrava, Mechanical Series, 2012
The article deals with the problem of optimal coverage of utility centres in transport network. We can often encounter similar types of tasks in a real life.
Dušan TEICHMANN   +2 more
doaj   +1 more source

Ant-Set: A Subset-Oriented Ant Colony Optimization Algorithm for the Set Covering Problem [PDF]

open access: yesJournal of Universal Computer Science, 2020
This paper proposes an algorithm for the set covering problem based on the metaheuristic Ant Colony Optimization (ACO) called Ant-Set, which uses a lineoriented approach and a novelty pheromone manipulation based on the connections between components of ...
Murilo Falleiros Lemos Schmitt   +4 more
doaj   +3 more sources

The online set cover problem [PDF]

open access: yesProceedings of the thirty-fifth annual ACM symposium on Theory of computing, 2003
Let X=[1,2,•••,n] be a ground set of n elements, and let S be a family of subsets of X, |S|=m, with a positive cost cS associated with each S ∈ S.Consider the following online version of the set cover problem, described as a game between an algorithm and an adversary. An adversary gives elements to the algorithm from X one-by-one. Once a new element is
Noga Alon, Baruch Awerbuch, Yossi Azar
openaire   +3 more sources

Hybrid Set Covering and Dynamic Modular Covering Location Problem: Application to an Emergency Humanitarian Logistics Problem

open access: yesApplied Sciences, 2020
This paper presents an extension of the covering location problem as a hybrid covering model that utilizes the set covering and maximal covering location problems. The developed model is a multi-period model that considers strategic and tactical planning
Roghayyeh Alizadeh, Tatsushi Nishi
doaj   +1 more source

The analysis of algorithm for transmitters locating problem

open access: yesLietuvos Matematikos Rinkinys, 2023
The analysis of ACO algorithm for transmitters locating problem is presented in this paper.
Saulius Lazaravičius   +1 more
doaj   +3 more sources

Two Neighbourhood-based Approaches for the Set Covering Problem

open access: yesU.Porto Journal of Engineering, 2019
The Set Covering Problem is a well-known NP-complete problem which we address in this work. Due to its combinatorial nature heuristic methods, namely neighbourhood-based meta-heuristics, were used.
Eduardo Meca Castro
doaj   +1 more source

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