نتایج جستجو برای: شبکه rbf

تعداد نتایج: 40533  

2009
Jasmina Novakovic

The aim of this paper is to show the possible improvement of the reliability of classification of RBF networks using genetic algorithms for attribute selection. A disadvantage of RBF networks is that they cannot deal effectively with irrelevant features. Genetic search may filter features leading to reduce dimensionality of the feature space. In our experiments, genetic search improves classifi...

Journal: :CoRR 2001
W. Chen

Abstract. A few novel radial basis function (RBF) discretization schemes for partial differential equations are developed in this study. For boundary-type methods, we derive the indirect and direct symmetric boundary knot methods. Based on the multiple reciprocity principle, the boundary particle method is introduced for general inhomogeneous problems without using inner nodes. For domain-type ...

2016
Jin Ren Jingxing Chen Liang Feng

Abstract: Much attention has been paid to Taylor series expansion (TSE) method these years, which has been extensively used for solving nonlinear equations for its good robustness and accuracy of positioning. A Taylor-series expansion location algorithm based on the RBF neural network (RBF-TSE) is proposed before to the performance of TSE highly depends on the initial estimation. In order to ha...

2009
S. L. Ho Minrui Fei W. N. Fu H. C. Wong Edward W. C. Lo

The circuit-field coupled model is very accurate but it is computationally inefficient in studying the output performance of brushless dc motors. In order to resolve the problem, an estimation strategy based on an integrated radial basis function (RBF) network is proposed in this paper. The strategy introduces new conceptions of the network group that are being realized by three steps, namely: ...

2004
G. E. Fasshauer

Moving least squares (MLS) and radial basis function (RBF) methods play a central role in multivariate approximation theory. In this paper we provide a unified framework for both RBF and MLS approximation. This framework turns out to be a linearly constrained quadratic minimization problem. We show that RBF approximation can be considered as a special case of MLS approximation. This sheds new l...

ژورنال: :فصلنامه علمی - پژوهشی مهندسی منابع آب 2010
حسین فتحیان محمد نیکو مهدی نیکو

یکی از روش های پیش بینی سیل در رودخانه ها به منظور مدیریت و کنترل سیل در آن، روندیابی سیل می باشد. امروزه تکنیک جدید استفاده از مدل شبکه های عصبی مصنوعی تکاملی(eann) که مبتنی بر هوش مصنوعی می باشد، کاربرد گسترده ای در زمینه های مختلف علمی به ویژه مهندسی آب پیدا کرده است. در این تحقیق به روندیابی سیل در رودخانه کارون، بازه اهواز- فارسیات، با استفاده از مدل های شبکه عصبی مصنوعی تکاملی پیش رونده (...

2015
Noah J. Marcus Carolin Pügge Jai Mediratta Alicia M. Schiller Rodrigo Del Rio Irving H. Zucker Harold D. Schultz

Marcus NJ, Pügge C, Mediratta J, Schiller AM, Del Rio R, Zucker IH, Schultz HD. Exercise training attenuates chemoreflexmediated reductions of renal blood flow in heart failure. Am J Physiol Heart Circ Physiol 309: H259–H266, 2015. First published May 18, 2015; doi:10.1152/ajpheart.00268.2015.—In chronic heart failure (CHF), carotid body chemoreceptor (CBC) activity is increased and contributes...

Journal: :American journal of physiology. Heart and circulatory physiology 2015
Noah J Marcus Carolin Pügge Jai Mediratta Alicia M Schiller Rodrigo Del Rio Irving H Zucker Harold D Schultz

In chronic heart failure (CHF), carotid body chemoreceptor (CBC) activity is increased and contributes to increased tonic and hypoxia-evoked elevation in renal sympathetic nerve activity (RSNA). Elevated RSNA and reduced renal perfusion may contribute to development of the cardio-renal syndrome in CHF. Exercise training (EXT) has been shown to abrogate CBC-mediated increases in RSNA in experime...

2017
Kazuhiro Shimizu Nobuyuki Kosaka Yasuhiro Fujiwara Tsuyoshi Matsuda Tatsuya Yamamoto Tatsuro Tsuchida Katsuki Tsuchiyama Nobuyuki Oyama Hirohiko Kimura

PURPOSE The importance of arterial transit time (ATT) correction for arterial spin labeling MRI has been well debated in neuroimaging, but it has not been well evaluated in renal imaging. The purpose of this study was to evaluate the feasibility of pulsed continuous arterial spin labeling (pcASL) MRI with multiple post-labeling delay (PLD) acquisition for measuring ATT-corrected renal blood flo...

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