Results 21 to 30 of about 1,003,970 (287)

Algorithmic approaches for network design with facility location: A survey [PDF]

open access: yesAUT Journal of Mathematics and Computing, 2022
We consider a family of problems that combine network design and facility location. Such problems arise in many practical applications in different fields such as telecommunications, transportation networks, logistic, and energy supply networks.
Mohsen Rezapour
doaj   +1 more source

Approximation algorithms for node-weighted prize-collecting Steiner tree problems on planar graphs [PDF]

open access: yes, 2016
We study the prize-collecting version of the Node-weighted Steiner Tree problem (NWPCST) restricted to planar graphs. We give a new primal-dual Lagrangian-multiplier-preserving (LMP) 3-approximation algorithm for planar NWPCST.
Byrka, Jarosław   +2 more
core   +2 more sources

A Duality Based 2-Approximation Algorithm for Maximum Agreement Forest [PDF]

open access: yes, 2016
We give a 2-approximation algorithm for the Maximum Agreement Forest problem on two rooted binary trees. This NP-hard problem has been studied extensively in the past two decades, since it can be used to compute the Subtree Prune-and-Regraft (SPR ...
Schalekamp, Frans   +2 more
core   +2 more sources

Algorithms For Positive Polynomial Approximation [PDF]

open access: yesSIAM Journal on Numerical Analysis, 2019
Summary: We propose several algorithms for positive polynomial approximation. The main tool is a novel iterative method to compute nonnegative interpolation polynomials at any order, which is shown to converge under conditions that make it suitable for the numerical approximation of positive functions. Our method is based on the special representations
Charles, Frédérique   +2 more
openaire   +2 more sources

NORA: An Approach for Transforming Network Management Policies into Automated Planning Problems

open access: yesSensors, 2021
Realizing autonomic management control loops is pivotal for achieving self-driving networks. Some studies have recently evidence the feasibility of using Automated Planning (AP) to carry out these loops. However, in practice, the use of AP is complicated
Angela Rodriguez-Vivas   +4 more
doaj   +1 more source

Approximation Algorithms for Aligning Points [PDF]

open access: yesAlgorithmica, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sergio Cabello, Marc J. van Kreveld
openaire   +4 more sources

A Primal–Dual-Based Power Control Approach for Capacitated Edge Servers

open access: yesSensors, 2022
The intensity of radio waves decays rapidly with increasing propagation distance, and an edge server’s antenna needs more power to form a larger signal coverage area.
Qinghui Zhang   +3 more
doaj   +1 more source

An Improved Approximation Algorithm for the Minimum Power Cover Problem with Submodular Penalty

open access: yesComputation, 2022
In this paper, we consider the minimum power cover problem with submodular penalty (SPMPC). Given a set U of n users, a set S of m sensors and a penalty function π:2U→R+ on the plane, the relationship that adjusts the power p(s) of each sensor s and its ...
Han Dai
doaj   +1 more source

Revision of Specification Automata under Quantitative Preferences [PDF]

open access: yes, 2014
We study the problem of revising specifications with preferences for automata based control synthesis problems. In this class of revision problems, the user provides a numerical ranking of the desirability of the subgoals in their specifications.
Fainekos, Georgios, Kim, Kangjin
core   +1 more source

Approximation Algorithms for Stochastic Boolean Function Evaluation and Stochastic Submodular Set Cover [PDF]

open access: yes, 2013
Stochastic Boolean Function Evaluation is the problem of determining the value of a given Boolean function f on an unknown input x, when each bit of x_i of x can only be determined by paying an associated cost c_i.
Deshpande, Amol   +2 more
core   +1 more source

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