نتایج جستجو برای: مدل rbf
تعداد نتایج: 125008 فیلتر نتایج به سال:
The performance of the proposed radial basis function (RBF) assisted turbo-coded adaptive modulation scheme is characterized in a wideband channel scenario. We commence by introducing the novel concept of the Jacobian RBF equalizer, which is a reduced-complexity version of the conventional RBF equalizer. Specifically, the Jacobian logarithmic RBF equalizer generates its output in the logarithmi...
Approximation methods are widely used in many fields and many techniques have been published already. This comparative study presents a comparison of LOWESS (Locally weighted scatterplot smoothing) and RBF (Radial Basis Functions) approximation methods on noisy data as they use different approaches. The RBF approach is generally convenient for high dimensional scattered data sets. The LOWESS me...
This paper describes a novel adaptive noise cancellation system with fast tunable radial basis function (RBF). The weight coefficients of the RBF network are adapted by the multi-innovation recursive least square (MRLS) algorithm. If the RBF network performs poorly despite of the weight adaptation, an insignificant node with little contribution to the overall performance is replaced with a new ...
A novel method for constructing RBF networks is presented. It is based on Boosting, an ensemble method that combines several classifiers obtained using any other classification method. If the classifiers that are going to be combined by boosting are radialbasis functions, then the boosting method produces a RBF network as result. The method for constructing a RBF is based on obtaining a decisio...
Radial Basis Function-generated Finite Differences: A Mesh-free Method for Computational Geosciences
Radial basis function generated finite differences (RBF-FD) is a mesh-free method for numerically solving partial differential equations (PDEs) that emerged in the last decade and has shown rapid growth in the last few years. From a practical standpoint, RBF-FD sprouted out of global RBF methods, which have shown exceptional numerical qualities in terms of accuracy and time stability for numeri...
In this paper we will discuss a 1D learner based on RBF (Radial Basis Functions) networks. It differs from the classical RBF networks by the selection of cluster centers dependent of class classification in the training set. After the method is described, it is compared to other methods (KNN, RBF) and improvement suggestions are made.
تبخیر-تعرق مرجع (ETo) یکی از پارامترهای مهم در طراحی پروژههای تامین و توزیع آب، مدیریت آبیاری، طراحی سیستمهای آبیاری، کشاورزی و عملیات هیدرولوژیکی است. پیچیدگی، ناشناخته بودن ریاضیات پدیده تبخیر-تعرق، عدم وجود دادههای بلندمدت هواشناسی قابل اطمینان، هزینهبر بودن استفاده از لایسیمترها و عدم وجود آنها در اکثر مناطق لزوم استفاده از روشهای جدید دادهکاوی را نشان میدهد. بدین منظور د...
این پژوهش با هدف مقایسه کارآیی برخی مدلهای شبیهسازی میزان رسوب معلق شامل منحنی سنجه رسوب و شبکه عصبی مصنوعی و ارائه مدل بهینه بر اساس دبی جریان در حوزه آبخیز شاهرود و بر روی ایستگاههای هیدرومتری گلینک، باغکلایه، لوشان و رجائی دشت انجام شد. به منظور شبیهسازی میزان رسوب معلق از مدل منحنی سنجه رسوب یک خطی و مدلهای شبکه عصبی پرسپترون چند لایه و تابع پایه شعاعی بهره گرفته و سپس ارزیابی این مدل...
To assess the roles of feeding behavior (eating and rumination) and systemic arterial pressure (SAP) on determination of the circadian rhythm of renal blood flow (RBF), 20 sheep fitted with ultrasonic flow-metering probes around both renal arteries and a submandibular balloon to monitor jaw movements (6 of them with a telemetry measurement system into the carotid artery for SAP recording), were...
ii Preface Radial Basis Function (RBF) methods have become the primary tool for interpolating multidimensional scattered data. RBF methods also have become important tools for solving Partial Differential Equations (PDEs) in complexly shaped domains. Classical methods for the numerical solution of PDEs (finite difference, finite element, finite volume, and pseudospectral methods) are based on p...
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