Results 61 to 70 of about 976,293 (195)

Critical evaluation of branch polarity and apical dominance as dictators of colony astogeny in a branching coral. [PDF]

open access: yesPLoS ONE, 2009
The high morphological resemblance between branching corals and trees, can lead to comparative studies on pattern formation traits, best exemplified in plants and in some cnidarians.
Lee Shaish, Baruch Rinkevich
doaj   +1 more source

Pruning by Isomorphism in Branch-and-Cut

open access: yesMathematical Programming, 2001
The paper presents a branch-and-cut for solving (0, 1) integer linear programs having a large symmetry group. The group is used for pruning the enumeration tree and for generating cuts. The cuts are non-standard, cutting integer feasible solutions but leaving the optimal value of the problem unchanged.
openaire   +2 more sources

Branch-and-price-and-cut for large-scale multicommodity capacitated fixed-charge network design

open access: yesEURO Journal on Computational Optimization, 2014
We present a branch-and-price-and-cut algorithm for solving large-scale instances of the multicommodity capacitated fixed-charge network design problem.
Bernard Gendron, Mathieu Larose
doaj   +1 more source

Branch-and-Cut-and-Price for Multi-Agent Pathfinding [PDF]

open access: yesProceedings of the Twenty-Eighth International Joint Conference on Artificial Intelligence, 2019
There are currently two broad strategies for optimal Multi-agent Pathfinding (MAPF): (1) search-based methods, which model and solve MAPF directly, and (2) compilation-based solvers, which reduce MAPF to instances of well-known combinatorial problems, and thus, can benefit from advances in solver techniques.
Edward Lam   +3 more
openaire   +2 more sources

Exploring the Numerics of Branch-and-Cut for Mixed Integer Linear Optimization

open access: yes, 2018
We investigate how the numerical properties of the LP relaxations evolve throughout the solution procedure in a solver employing the branch-and-cut algorithm.
Miltenberger, Matthias   +2 more
core   +1 more source

A Polynomial time Algorithm for Hamilton Cycle with maximum Degree 3

open access: yes, 2020
Based on the famous Rotation-Extension technique, by creating the new concepts and methods: broad cycle, main segment, useful cut and insert, destroying edges for a main segment, main goal Hamilton cycle, depth-first search tree, we develop a polynomial ...
Du, Lizhi
core  

A modied branch and cut procedure for resource portfolio problem under relaxed resource dedication policy [PDF]

open access: yes, 2012
Multi-project scheduling problems are characterized by the way resources are managed in the problem environment. The general approach in multi-project scheduling literature is to consider resource capacities as a common pool that can be shared among ...
Besikci, Umut   +5 more
core  

Path Planning for Cooperative Routing of Air-Ground Vehicles

open access: yes, 2016
We consider a cooperative vehicle routing problem for surveillance and reconnaissance missions with communication constraints between the vehicles.
Casbeer, David   +2 more
core   +1 more source

Self-Force and Green Function in Schwarzschild spacetime via Quasinormal Modes and Branch Cut

open access: yes, 2013
The motion of a small compact object in a curved background spacetime deviates from a geodesic due to the action of its own field, giving rise to a self-force. This self-force may be calculated by integrating the Green function for the wave equation over
Casals, Marc   +3 more
core   +1 more source

An exact method for a discrete multiobjective linear fractional optimization [PDF]

open access: yes
Integer linear fractional programming problem with multiple objective MOILFP is an important field of research and has not received as much attention as did multiple objective linear fractional programming.
Chergui, M. E-A, Moulai, M.
core   +1 more source

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