Results 51 to 60 of about 57,781 (308)

Portfolio Optimization Considering Financial Constraints Using Gray Wolf Algorithm

Journal of Information Systems Engineering and Management
The issue of optimal investment portfolio selection is one of the infrastructures and cornerstones of the financial industry. This issue is not only in the area of optimal resource allocation in the market, but also in the ability to meet the needs of market participants and effectively manage investment risk.
Seyed Mehran Arabi Zanjani
openalex   +3 more sources

Optimal distributed decision in wireless sensor network using gray wolf optimization

IAES International Journal of Artificial Intelligence (IJ-AI), 2020
<p class="Default">The distributed object decision (DOD) was applied to choose a single solution for problem among many complexes solutions. Most of DOD systems depend on traditional technique like small form factor optical (SFFO) method and scalable and oriented fast-based local features (SOFF) method.
Ibrahim Ahmed Saleh, Omar Ibrahim Alsaif, Maan A. Yahya   +2 more
openaire   +1 more source

An adaptive improved gray wolf optimization algorithm with dynamic constraint handling for mechanism-constrained optimization problems [PDF]

Mechanical Sciences
To address constrained optimization problems in mechanical design, this study proposes an enhanced gray wolf optimization (GWO) algorithm. First, a novel individual memory optimization strategy is developed to expand the population's exploration scope ...
Y. Lei, M. Huang
doaj   +1 more source

Rolling Bearing Fault Diagnosis Based on WGWOA-VMD-SVM

Sensors, 2022
A rolling bearing fault diagnosis method based on whale gray wolf optimization algorithm-variational mode decomposition-support vector machine (WGWOA-VMD-SVM) was proposed to solve the unclear fault characterization of rolling bearing vibration signal ...
Junbo Zhou, Maohua Xiao, Yue Niu, Guojun Ji   +3 more
doaj   +1 more source

Photometric redshifts with Quasi Newton Algorithm (MLPQNA). Results in the PHAT1 contest [PDF]

, 2012
Context. Since the advent of modern multiband digital sky surveys, photometric redshifts (photo-z's) have become relevant if not crucial to many fields of observational cosmology, from the characterization of cosmic structures, to weak and strong lensing.
Brescia, Massimo, Cavuoti, Stefano, Longo, Giuseppe, Mercurio, Amata   +3 more
core   +3 more sources

Application of GWO-SVM Algorithm in Arc Detection of Pantograph

IEEE Access, 2020
High-speed train will produce pantograph arc during the driving process, which is harmful to pantograph-catenary system. In order to reduce pantograph-catenary system damage, a method based on Gray Wolf algorithm to optimize the binary Support Vector ...
Bin Li, Chenyu Luo, Zhiyong Wang
doaj   +1 more source

Circumstellar Structure around Evolved Stars in the Cygnus-X Star Formation Region [PDF]

, 2010
We present observations of newly discovered 24 micron circumstellar structures detected with the Multiband Imaging Photometer for Spitzer (MIPS) around three evolved stars in the Cygnus-X star forming region. One of the objects, BD+43 3710, has a bipolar
Aoki, Argelander, Bernard-Salas, Billot, Cutri, Dolidze, Donald R. Mizuno, Egan, Egan, Eric Keto, Fazio, Frederique Motte, Giovanni G. Fazio, Gutermuth, Gvaramadze, Herbig, Higgs, Hora, Houck, Howard A. Smith, Høg, Jiménez-Esteban, Joseph Adams, Joseph L. Hora, Kathleen E. Kraemer, Kraemer, Kraemer, Li, Lori E. Allen, Michael P. Egan, Mizuno, Morris, Morris, Morris, Nicola Schneider, Rieke, Rizzo, Robert Gutermuth, Robert Simon, S. Thomas Megeath, Sean J. Carey, Skrutskie, Sloan, Stephan D. Price, Sylvain Bontemps, Voors, Waters, Werner, Xavier P. Koenig, Zacharias   +49 more
core   +4 more sources

The Adaptation of Gray Wolf Optimizer to Data Clustering

Politeknik Dergisi, 2022
Data Clustering stands for a group of methods classifying patterns into groups and retrieving similarities or dissimilarities of a collection of objects. Clustering is used for pattern recognition, machine learning, etc. One of the approaches to clustering is optimization.
Adem TEKEREK, Murat DÖRTERLER
openaire   +4 more sources

Spectral Tuning of Hyperbolic Shear Polaritons in Monoclinic Gallium Oxide via Isotopic Substitution

Advanced Materials, EarlyView.
Spectral tuning of highly directional hyperbolic shear polaritons is realized via isotopic substitution of 16O to 18O in monoclinic β$\beta$‐phase gallium oxide. A red‐shift of almost 40 cm−1 is experimentally demonstrated with near‐field imaging, corroborated by the permittivity change extracted from far‐field experiments and density functional theory.
Giulia Carini, Mohit Pradhan, Elena Gelžinytė, Andrea Ardenghi, Saurabh Dixit, Maximilian Obst, Aditha S. Senarath, Niclas S. Mueller, Gonzalo Álvarez‐Pérez, Katja Diaz‐Granados, Ryan A. Kowalski, Richarda Niemann, Felix G. Kaps, Jakob Wetzel, Raghunandan Balasubramanyam Iyer, Piero Mazzolini, Mathias Schubert, J. Michael Klopf, Johannes T. Margraf, Oliver Bierwagen, Martin Wolf, Karsten Reuter, Lukas M. Eng, Susanne C. Kehr, Joshua D. Caldwell, Christian Carbogno, Thomas G. Folland, Markus R. Wagner, Alexander Paarmann   +28 more
wiley   +1 more source

A Modified Grey Wolf Algorithm with Applications to Engineering [PDF]

مجله مدل سازی در مهندسی
In this contribution, a modified gray wolf algorithm for use in engineering applications is presented. The grey wolf algorithm is one of the meta-heuristic optimization methods that has recently been widely used by researchers due to its good ...
Vahid Mahboub
doaj   +1 more source