نتایج جستجو برای: روش rbf

تعداد نتایج: 374510  

2012
LIN CUI CAIYIN WANG BAOSHENG YANG

The current fault diagnosis methods based on conventional BP neural network and RBF neural network exist long training time, slow convergence speed and low judgment accuracy rate and so on. In order to improve the ability of fault diagnosis, this paper puts forward a kind of fault diagnosis method based on RBF Neural Network improved by PSO algorithm. By using particle swarm algorithm’s heurist...

Journal: :CoRR 2016
Varun Shankar

We present a generalization of the RBF-FD method that allows full control of the overlap between RBF-FD stencils. We accomplish this by introducing a continuous overlap parameter δ ∈ [0, 1] such that δ = 1 recovers the standard RBF-FD method and δ = 0 results in a full decoupling of the RBF-FD stencils. We show with a simple example that global interpolation with both RBFs and RBFs augmented wi...

Journal: :Appl. Soft Comput. 2011
Sultan Noman Qasem Siti Mariyam Hj. Shamsuddin

This paper proposes an adaptive evolutionary radial basis function (RBF) network algorithm to evolve accuracy and connections (centers and weights) of RBF networks simultaneously. The problem of hybrid learning of RBF network is discussed with the multi-objective optimization methods to improve classification accuracy for medical disease diagnosis. In this paper, we introduce a time variant mul...

2013
Jesper S. Sørensen Jesper Johannesen Flemming Pociot Kurt Kristensen Jane Thomsen N. Thomas Hertel Per Kjaersgaard Caroline Brorsson Niels H. Birkebaek

OBJECTIVE To determine the prevalence of residual β-cell function (RBF) in children after 3-6 years of type 1 diabetes, and to examine the association between RBF and incidence of severe hypoglycemia, glycemic control, and insulin requirements. RESEARCH DESIGN AND METHODS A total of 342 children (173 boys) 4.8-18.9 years of age with type 1 diabetes for 3-6 years were included. RBF was assesse...

2010
Scott A. Sarra

Radial Basis Function (RBF) methods that employ infinitely differentiable basis functions featuring a shape parameter are theoretically spectrally accurate methods for scattered data interpolation and for solving Partial Differential Equations. It is also theoretically known that RBF methods are most accurate when the linear systems associated with the methods are extremely ill-conditioned. Thi...

2009
Sultan Noman Qasem Siti Mariyam Hj. Shamsuddin

This study proposes RBF Network hybrid learning with Particle Swarm Optimization for better convergence, error rates and classification results. In conventional RBF Network structure, different layers perform different tasks. Hence, it is useful to split the optimization process of hidden layer and output layer of the network accordingly. RBF Network hybrid learning involves two phases. The fir...

Journal: :IEEE transactions on neural networks 1999
Nicolaos B. Karayiannis

This paper presents an axiomatic approach for constructing radial basis function (RBF) neural networks. This approach results in a broad variety of admissible RBF models, including those employing Gaussian RBF's. The form of the RBF's is determined by a generator function. New RBF models can be developed according to the proposed approach by selecting generator functions other than exponential ...

Journal: :IJBIC 2009
Sheng Chen Xia Hong Bing Lam Luk Christopher J. Harris

A novel particle swarm optimisation (PSO) tuned radial basis function (RBF) network model is proposed for identification of non-linear systems. At each stage of orthogonal forward regression (OFR) model construction process, PSO is adopted to tune one RBF unit’s centre vector and diagonal covariance matrix by minimising the leave-one-out (LOO) mean square error (MSE). This PSO aided OFR automat...

ژورنال: :زمین شناسی مهندسی 0
نرگس سلیمی n salimi دانشگاه خوارزمی، دانشکده علوم زمین، سید محمود فاطمی عقدا m fatemiaghda دانشگاه خوارزمی، دانشکده علوم زمین، محمد تشنه لب m teshnehlab دانشگاه صنعتی خواجه نصیرالدین طوسی، دانشکده مهندسی برق یوسف شرفی y sharafi دانشگاه آزاد اسلامی تهران، واحد علوم وتحقیقات، گروه کامپیوتر

زمین­لغزش­ها هر سال خسارت­های مالی و جانی زیادی به بار می­آورند. نقشه­های پهنه بندی خطر زمین­لغزش می­توانند به کاهش این خسارت­ها کمک کنند. حوزۀ آبخیز طالقان از جمله­ حوزه­های مستعد زمین­لغزش است که بررسی شده است. در این مقاله به پهنه­بندی خطر زمین­لغزش در این منطقه و در مقیاس 50000/1، و با در نظر داشتن لایه­های اطلاعاتی پراکندگی لغزش­ها، شیب، برای شیب، زمین شناسی (لیتولوژی)، فاصله از گسل­ها، فا...

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