نتایج جستجو برای: pnn model

تعداد نتایج: 2104938  

1991
David J. Montana

The Probabilistic Neural Network (PNN) algorithm represents the likelihood function of a given class as the sum of identical, isotropic Gaussians. In practice, PNN is often an excellent pattern classifier, outperforming other classifiers including backpropagation. However, it is not robust with respect to affine transformations of feature space, and this can lead to poor performance on certain ...

Journal: :Journal La Multiapp 2022

Today the whole world suffers and fears epidemic of Coronavirus developed waves in it, as we have now reached fourth wave, this is a serious matter. Where statistics current data showed that 213 countries are affected by epidemic, about 6 millions deaths recorded. This virus spreads rapidly, patients mainly suffer from breathing. The patient who pre-existing health problems will be more likely ...

Journal: :Appl. Soft Comput. 2011
Satchidananda Dehuri Bijan Bihari Misra Ashish Ghosh Sung-Bae Cho

A novel condensed polynomial neural network using particle swarm optimization (PSO) technique is proposed for the task of classification in this paper. In solving classification task classical algorithms such as polynomial neural network (PNN) and its variants need more computational time as the partial descriptions (PDs) grow over the training period layer-by-layer and make the network very co...

2009
Dimitrios H. Mantzaris George C. Anastassopoulos Lazaros S. Iliadis Adam V. Adamopoulos

This study proposes an Artificial Neural Network (ANN) and Genetic Algorithm model for diagnostic risk factors selection in medicine. A medical disease prediction may be viewed as a pattern classification problem based on a set of clinical and laboratory parameters. Probabilistic Neural Networks (PNNs) were used to face a medical disease prediction. Genetic Algorithm (GA) was used for pruning t...

2012
W. S. Lim M. V. C. Rao

In this paper, the processing of sonar signals has been carried out using Minimal Resource Allocation Network (MRAN) and a Probabilistic Neural Network (PNN) in differentiation of commonly encountered features in indoor environments. The stability-plasticity behaviors of both networks have been investigated. The experimental result shows that MRAN possesses lower network complexity but experien...

Journal: :Journal of Hydroinformatics 2023

Abstract Accurately obtaining the distribution of open-channel velocity field in hydraulic engineering is extremely important, which helpful for better calculation flow and analysis water characteristics. In recent years, machine learning has been used prediction. However, effective training data-driven models heavily depends on diversity quantity data. this paper, a CFD-based pre-training neur...

2008
S. Farzi

Recently, a lot of attention has been devoted to advanced techniques of system modeling. PNN(polynomial neural network) is a GMDH-type algorithm (Group Method of Data Handling) which is one of the useful method for modeling nonlinear systems but PNN performance depends strongly on the number of input variables and the order of polynomial which are determined by trial and error. In this paper, w...

Journal: :the journal of tehran university heart center 0
saeed abrootan department of cardiology, imam khomeini hospital, ahvaz jundishapur university of medical sciences, ahvaz, iran. saeed yazdankhah department of cardiology, imam khomeini hospital, ahvaz jundishapur university of medical sciences, ahvaz, iran. babak payami department of cardiology, imam khomeini hospital, ahvaz jundishapur university of medical sciences, ahvaz, iran. mohammad alasti department of cardiology, bahman general hospital, tehran, iran.

background: patients with chronic stable angina often have a state of sympathetic hyperactivity. it is considered associated with myocardial ischemia and disappears after ischemia elimination. the aim of this study was to investigate the changes in heart rate variability parameters, a noninvasive technique for the evaluation of the autonomic nervous system activity, after successful revasculari...

2015
P. Rivas-Perea J. G. Rosiles M. I. Chacon

This paper address the problem of dust storm detection based on multispectral image analysis from a probabilistic point of view. Two classifiers are designed, one based on classic probability theory and other based on a probabilistic computational intelligence approach. The first classifier is designed under the Maximum Likelihood Estimation (MLE) model, and the second with a Probabilistic Neur...

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