A hybrid method of modified cat swarm optimization and gradient descent algorithm for training anfis

, Article International Journal of Computational Intelligence and Applications ; Volume 12, Issue 2 , June , 2013 ; 14690268 (ISSN) Orouskhani, M ; Mansouri, M ; Orouskhani, Y ; Teshnehlab, M ; Sharif University of Technology

2013

Abstract

This paper introduces a novel approach for tuning the parameters of the adaptive network-based fuzzy inference system (ANFIS). In the commonly used training methods, the antecedent and consequent parameters of ANFIS are trained by gradient-based algorithms and recursive least square method, respectively. In this study, a new swarm-based meta-heuristic optimization algorithm, so-called "Cat Swarm Optimization", is used in order to train the antecedent part parameters and gradient descent algorithm is applied for training the consequent part parameters. Experimental results for prediction of Mackey-Glass model and identification of two nonlinear dynamic systems reveal that the performance of...

Development of An Intelligent System For Thyroid Disease Diagnosis , Modeling And Simulation of Thyroid Hormone In Human Body

, M.Sc. Thesis Sharif University of Technology Orouskhani, Erfan (Author) ; Bozorgmehri, Ramin (Supervisor)

Abstract

The abstract is the most important section of the thesis because many readers limit most of their reading to abstracts, saving in-depth reading for specific theses. It should give the reader a "preview" of what's to come. The abstract should emphasize new and important aspects of the study or observations. The purpose of the abstract is to allow researchers to decide whether or not to read the whole thesis. The abstract is what researchers read first to decide if the thesis is important, interesting, and it allows them to assess the relevance of a thesis to their own research, without having to read the entire thesis. Thus, it is crucial that the abstract both summarize succinctly the key...

Structural Optimization of Complex Networks

, M.Sc. Thesis Sharif University of Technology Orouskhani, Yasin (Author) ; Jalili, Mahdi (Supervisor)

Abstract

Network structures have many applications in everyday life. For example, we can refer to the real world systems in which clients are indicated by nodes and edges represent their connectivity. Network science has witnessed tremendous progress over the last decade. The field of Network Science and Engineering started by exploring properties of real-world network systems and constructing proper models. Previous studies shows that all real world systems share some common structural features, such as scale free degree distribution and group structure. Analyzing interaction between network structure and its dynamic is a one of the main problem in studying complex dynamical networks. In this study,...

Optimizing dynamical network structure for pinning control

, Article Scientific Reports ; Volume 6 , 2016 ; 20452322 (ISSN) Orouskhani, Y ; Jalili, M ; Yu, X ; Sharif University of Technology

Nature Publishing Group 2016

Abstract

Controlling dynamics of a network from any initial state to a final desired state has many applications in different disciplines from engineering to biology and social sciences. In this work, we optimize the network structure for pinning control. The problem is formulated as four optimization tasks: i) optimizing the locations of driver nodes, ii) optimizing the feedback gains, iii) optimizing simultaneously the locations of driver nodes and feedback gains, and iv) optimizing the connection weights. A newly developed population-based optimization technique (cat swarm optimization) is used as the optimization method. In order to verify the methods, we use both real-world networks, and model...

A size-dependent generalized thermoelasticity theory for thermoelastic damping in vibrations of nanobeam resonators

, Article International Journal of Structural Stability and Dynamics ; Volume 23, Issue 12 , 2023 ; 02194554 (ISSN) Jalil, A.T ; Saleh, Z. M ; Imran, A. F ; Yasin, Y ; Ruhaima, A. A. K ; Gatea, M. A ; Esmaeili, S ; Sharif University of Technology

World Scientific 2023

Abstract

Thermoelastic damping (TED) has been discerned as a definite source of intrinsic energy loss in miniaturized mechanical elements. The size-dependent structural and thermal behavior of these small-sized structures has been proven through experimental observations. As a first attempt, this article exploits nonlocal strain gradient theory (NSGT) and nonlocal dual-phase-lag (NDPL) heat conduction model simultaneously to acquire a mathematical formulation and analytical solution for TED in nanobeams that can accommodate size effect into both structural and heat transfer fields. For this purpose, the coupled equations of motion and heat conduction are firstly extracted via NSGT and NDPL model....

Effect of pesticides on erythrocytes of indigenous fish Labeo rohita

, Article Journal of King Saud University - Science ; Volume 33, Issue 7 , 2021 ; 10183647 (ISSN) Bano, N ; Nadeem, A ; Maalik, S ; Mushtaq, S ; Iqbal, N ; Khan, A. K ; Shabbir, A ; Imran, M ; Niaz, S ; Yasin, M ; Qayyum, M. A ; Ahmad, B ; Skalicky, M ; Alharbi, S. A ; Alfarraj, S ; Sharif University of Technology

Elsevier B.V 2021

Abstract

Single cell gel electrophoresis was used to observe the effect of bifenthrin and chlorpyrifos on Labeo rohita. The present work was planned to study the genotoxic effect of pesticide mixture on the major indian carp, L. rohita at sub-lethal concentration 33% LC50. First of all, 96-hr LC50 was determined for L. rohita, then fish was given sub-lethal environment for 70 days. Erythrocytes from blood were taken after each fortnight for the assessment of time dependent DNA damage (% damage), aggregate tail length of comets and genomic destruction. There was increase in damage up to 56 days and after that a slight decrease was observed in next fourteen days. After statistical analysis, it was...