Results 31 to 40 of about 1,970,865 (281)

A Fast Feature Selection Algorithm Based on Swarm Intelligence in Acoustic Defect Detection

open access: yesIEEE Access, 2018
Feature selection plays an important role in data mining and pattern recognition. However, most existing feature selection methods suffer from stagnation in local optimal and/or high computational cost.
Tao Zhang   +3 more
doaj   +1 more source

Quantum Optimization Problems

open access: yes, 2002
Krentel [J. Comput. System. Sci., 36, pp.490--509] presented a framework for an NP optimization problem that searches an optimal value among exponentially-many outcomes of polynomial-time computations.
C. H. Bennett   +14 more
core   +2 more sources

Generalized Kruithof approach for traffic matrix estimation [PDF]

open access: yes, 2006
[Abstract]: In this paper, the traffic matrix estimation problem is formulated as an nonlinear optimization problem based on the generalized Kruithof approach which uses the Kullback distance to measure the probabilistic distance between two traffic ...
Eum, Suyong   +2 more
core   +1 more source

Optimization Problems [PDF]

open access: yes, 2016
This issue deals with the conceptualization of an optimization problem. In particular, we first provide a formal definition of such a mathematical concept. Then, we give some classifications of the optimization problems on the basis of their main characteristics (presence of time dependence and of constraints). In so doing, we also outline the standard
CERQUETI, ROY, COPPIER, RAFFAELLA
openaire   +2 more sources

A Two-Step Strategy for System Identification of Civil Structures for Structural Health Monitoring Using Wavelet Transform and Genetic Algorithms

open access: yesApplied Sciences, 2017
Nowadays, the accurate identification of natural frequencies and damping ratios play an important role in smart civil engineering, since they can be used for seismic design, vibration control, and condition assessment, among others.
Carlos Andres Perez-Ramirez   +6 more
doaj   +1 more source

Revamped Sine Cosine Algorithm Centered Optimization of System Stabilizers and Oscillation Dampers for Wind Penetrated Power System

open access: yesIEEE Access, 2023
The mapping of damping ratios and damping factors by Sine-Cosine Algorithm (SCA) is significant in the analysis of low frequency oscillations generated in an integrated network having multiple conventional and renewable energy sources.
S. Grace Sadhana, S. Kumaravel, S. Ashok
doaj   +1 more source

About the Object-Oriented Implementation of the Branch and Boundary Method for the Travelling Salesman Problem. Part II

open access: yesСовременные информационные технологии и IT-образование, 2022
Many discrete optimization problems are very difficult to solve on a computer; hence they are titled “intractable”. More precisely, the possible approaches to solving these problems quickly are difficult to solve (for describing algorithms, for ...
Boris Melnikov
doaj   +1 more source

Sharp interface limit for a phase field model in structural optimization

open access: yes, 2016
We formulate a general shape and topology optimization problem in structural optimization by using a phase field approach. This problem is considered in view of well-posedness and we derive optimality conditions.
Christoph Rupprecht   +7 more
core   +1 more source

Solving ill-posed bilevel programs [PDF]

open access: yes, 2016
This paper deals with ill-posed bilevel programs, i.e., problems admitting multiple lower-level solutions for some upper-level parameters. Many publications have been devoted to the standard optimistic case of this problem, where the difficulty is ...
AG Mersha   +43 more
core   +1 more source

Energy-Efficient On–Off Power Control of Femto-Cell Base Stations for Cooperative Cellular Networks

open access: yesApplied Sciences, 2016
Improving energy efficiency (EE) of mobile communication systems (MCSs) has been considered a key aim in recent years, and has been the subject of intense research interest.
Woongsup Lee, Bang Chul Jung
doaj   +1 more source

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