Kurum Yazarı "Oysal, Yusuf" WoS İndeksli Yayınlar Koleksiyonu İçin Listeleme
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An Adaptive Fuzzy Wavelet Neural Network with Gradient Learning Algorithm For Nonlinear Function Approximation
Oysal, Yusuf; Yılmaz, Sevcan (IEEE, 2013)In this paper a new adaptive fuzzy wavelet neural network (AFWNN) model is proposed for nonlinear function approximation problems. The AFWNN model is a Takagi-Sugeno-Kang (TSK) fuzzy system in which the membership functions ... -
Adaptive load frequency control with dynamic fuzzy networks in power systems
Oysal, Yusuf; Yılmaz, AS; Koklukaya, E (Springer-Verlag Berlin, 2005)This paper proposes a new controller based on neural network and fuzzy logic technologies for load frequency control to allow for the incorporation of both heuristics and deep knowledge to exploit the best characteristics ... -
An adaptive wavelet network for function learning
Oysal, Yusuf; Yılmaz, Sevcan (Springer London LTD, 2010)In this article, a wavelet neural network (WNN) model is proposed for approximating arbitrary nonlinear functions. Our WNN model structure comes from the idea of adaptive neuro-fuzzy inference system (ANFIS) which is used ... -
An Analysis and Comparison of Adoption of E-learning Systems in Higher Education by Lecturers at Largest Universities in Estonia and Turkey
Gülle, Fatih; Kuusik, Rein; Shogenov, Kazbulat; Laanpere, Mart; Oysal, Yusuf; Sözcü, Ömer Faruk; Parlak, Zekeriya (University Latvia, 2016)In this study, for the first time, we analysed and compared adoption of e-learning by lecturers in three largest universities in Estonia and Turkey. Total number of students and academic staff in the Estonian universities ... -
A comparative study of adaptive load frequency controller designs in a power system with dynamic neural network models
Oysal, Yusuf (Pergamon-Elsevier Science LTD, 2005)This paper investigates applications of dynamic neural network (DNN) models for adaptive load frequency controller designs in power systems. The proposed dynamic neural network models have lag dynamics and dynamical elements ... -
Dynamic Fuzzy System Design for Modeling and Control of Nonlinear Dynamical Processes
Yılmaz, Sevcan; Oysal, Yusuf (IEEE, 2015)This paper introduces the architecture and learning procedure of dynamic fuzzy system (DFS) and its control application with linear quadratic regulator (LQR). Our DFS model is a Takagi-Sugeno type fuzzy system. IF parts ... -
A dynamic wavelet network based adaptive load frequency control in power systems
Oysal, Yusuf; Yılmaz, AS; Koklukaya, E (Elsevier Sci LTD, 2005)This paper proposes a new adaptive load frequency controller based on a 'dynamic wavelet network (DWN)' that has lag dynamics, nonorthogonal mother wavelets as activation function and interconnection weights. A DWN is ... -
Estimation of cutting speed in abrasive water jet using an adaptive wavelet neural network
Ergür, H. Sevil; Oysal, Yusuf (Springer, 2015)Abrasive water jet cutting has been proven to be an effective technology for processing various engineering materials. To determine the optimal jet traverse rate (cutting speed) in abrasive water jet cutting is not very ... -
Finding the State Sequence Maximizing P(O, I vertical bar lambda) on Distributed HMMs with Privacy
Renckes, Şahin; Polat, Hüseyin; Oysal, Yusuf (IEEE, 2009)Hidden Markov models (HMMs) are widely used by many applications for forecasting purposes. They are increasingly becoming popular models as part of prediction systems in finance, marketing, bio-informatics, speech recognition, ... -
A Fuzzy Wavelet Neural Network Model for System Identification
Yılmaz, Sevcan; Oysal, Yusuf (IEEE, 2009)In this paper, a fuzzy wavelet neural network model is proposed for system identification problems. The proposed model is obtained from the traditional Takagi-Sugeno-Kang (TSK) fuzzy system by replacing the consequent part ... -
Fuzzy Wavelet Neural Network Models for Prediction and Identification of Dynamical Systems
Yılmaz, Sevcan; Oysal, Yusuf (IEEE-Inst Electrical Electronics Engineers Inc, 2010)This paper presents fuzzy wavelet neural network (FWNN) models for prediction and identification of nonlinear dynamical systems. The proposed FWNN models are obtained from the traditional Takagi-Sugeno-Kang fuzzy system ... -
Generalized modeling principles of a nonlinear system with a dynamic fuzzy network
Oysal, Yusuf; Becerikli, Y; Konar, AF (Pergamon-Elsevier Science LTD, 2003)Generalized modeling principles of a nonlinear system with a dynamic fuzzy network (DFN)-a network with unconstrained connectivity and with dynamic fuzzy processing units called 'feurons', have been given. DFN model has ... -
An intelligent control of chaos in Lorenz system with a dynamic wavelet network
Oysal, Yusuf (Springer-Verlag Berlin, 2004)This,paper proposes a dynamic wavelet network based intelligent adaptive controller design to regulate the chaotic states of the Lorenz equations. The "Dynamic Wavelet Network (DWN)" has lag dynamics, non-orthogonal mother ... -
Missing wind data forecasting with adaptive neuro-fuzzy inference system
Hocaoğlu, Fatih Onur; Oysal, Yusuf; Kurban, Mehmet (Springer, 2009)In any region, to begin generating electricity from wind energy, it is necessary to determine the 1-year distribution characteristics of wind speed. For this aim, a wind observation station must be constructed and 1-year ... -
Modeling and prediction with a class of time delay dynamic neural networks
Becerikli, Yaşar; Oysal, Yusuf (Elsevier Science BV, 2007)In this paper, we propose a time delay dynamic neural network (TDDNN) to track and predict a chaotic time series systems. The application of artificial neural networks to dynamical systems has been constrained by the ... -
Modified descend curvature based fixed form fuzzy optimal control of nonlinear dynamical systems
Oysal, Yusuf; Becerikli, Y; Konar, AF (Pergamon-Elsevier Science LTD, 2006)In this study, a fuzzy rule-based optimal controller is designed for nonlinear dynamical systems. The direct second order method (or direct-descend-curvature algorithm) with a modification called "modified descend controller ... -
A new hybrid recommendation algorithm with privacy
Renckes, Şahin; Polat, Hüseyin; Oysal, Yusuf (Wiley-Blackwell, 2012)Providing accurate and dependable recommendations efficiently while preserving privacy is essential for e-commerce sites to recruit new customers and keep the existing ones. Such sites might be able to increase their sales ... -
Nonlinear System Modeling and Control with Dynamic Fuzzy Wavelet Neural Network
Yılmaz, Sevcan; Oysal, Yusuf (IEEE, 2015)This paper proposes a fuzzy neural network model which is dynamic and uses wavelet functions in its processing units. Because of that this new model is called as dynamic fuzzy wavelet neural network (DFWNN). In the DFWNN ... -
Nonlinear System Modeling With Dynamic Adaptive Neuro-Fuzzy Inference System
Yılmaz, Sevcan; Oysal, Yusuf (IEEE, 2014)This paper introduces the architecture and learning procedure of dynamic adaptive neuro-fuzzy inference system (DANFIS) for nonlinear dynamical system modeling. In our DANIS model, IF part of the rules are comprised of ... -
On a dynamic wavelet network and its modeling application
Becerikli, Yaşar; Oysal, Yusuf; Konar, AF (Springer-Verlag Berlin, 2003)This study presents a nonlinear dynamical system modeling with dynamic wavelet networks (DWNs). Wavelet is widely used in processing of signals and data. It has been also shown that wavelet can be effectively used in ...