نتایج جستجو برای: pnn model
تعداد نتایج: 2104938 فیلتر نتایج به سال:
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 ...
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 ...
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...
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...
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...
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...
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...
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...
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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