نتایج جستجو برای: probabilistic neural networks pnns

تعداد نتایج: 694169  

2004
V. L. Georgiou

A self adaptive probabilistic neural network model is proposed. The model incorporates the Particle Swarm Optimization algorithm to optimize the spread parameter of the probabilistic neural network, enhancing thus its performance. The proposed approach is tested on two data sets from the field of bioinformatics, with promising results. The performance of the proposed model is compared to probab...

2006
V. L. Georgiou Ph. D. Alevizos M. N. Vrahatis

In this contribution a new supervised classification model is proposed, namely the Fuzzy Evolutionary Probabilistic Neural Network (FEPNN). The proposed model incorporates a fuzzy class membership function into the recently proposed Evolutionary Probabilistic Neural Network (EPNN). EPNN employs an evolutionary algorithm, namely the Particle Swarm Optimization (PSO), for the selection of the spr...

Journal: :J. Comput. Meth. in Science and Engineering 2006
Panagiota Spyridonos Panagiotis Petalas Dimitris Glotsos Dionisis A. Cavouras Panagiota Ravazoula George Nikiforidis

Purpose: In this paper we address the demanding diagnostic problem of classifying tumors according to the degree of their malignancy by investigating the efficiency of Support Vector Machines (SVMs) and Probabilistic neural networks (PNN). Material and methods: 129 cases of urinary bladder carcinomas were diagnosed as high or low-risk according to the WHO grading system. Each case was represent...

1991
Bhaskar DasGupta

Recurrent neural networks are important models of neural computation This work relates the power of them to those of other conventional models of computation like Turing machines and nite automata and proves results about their learning capabilities Speci cally it shows a Probabilistic recurrent networks and Probabilistic turing ma chine models are equivalent b Probabilistic recurrent networks ...

2017
Kristian Kinden Lensjø Ane Charlotte Christensen Simen Tennøe Marianne Fyhn Torkel Hafting

Perineuronal nets (PNNs) are specialized extracellular matrix (ECM) structures that condense around the soma and proximal dendrites of subpopulations of neurons. Emerging evidence suggests that they are involved in regulating brain plasticity. However, the expression of PNNs varies between and within brain areas. A lack of quantitative studies describing the distribution and cell-specificity of...

Journal: :iranian journal of fuzzy systems 2005
yong soo kim z. zenn bien

the proposed iafc neural networks have both stability and plasticity because theyuse a control structure similar to that of the art-1(adaptive resonance theory) neural network.the unsupervised iafc neural network is the unsupervised neural network which uses the fuzzyleaky learning rule. this fuzzy leaky learning rule controls the updating amounts by fuzzymembership values. the supervised iafc ...

2004
Roberto Gil-Pita Pilar Jarabo Amores Manuel Rosa-Zurera Francisco López-Ferreras

A study is presented to compare the performance of multilayer perceptrons, radial basis function networks, and probabilistic neural networks for classification. In many classification problems, probabilistic neural networks have outperformed other neural classifiers. Unfortunately, with this kind of networks, the number of required operations to classify one pattern directly depends on the numb...

2011
Keith Douglas Stuart Maciej Majewski Ana Botella Trelis

The paper describes the application of hybrid probabilistic neural networks for corpus analysis which consists of intelligent semanticbased methods of analysis and recognition of word clusters and their meaning. The task of analyzing a corpus of academic articles was resolved with hybrid probabilistic neural networks and developed word clusters. The created prototypes of word clusters provide t...

2009
M. H. Sedaaghi

Accurate gender classification is useful in speech and speaker recognition as well as speech emotion classification, because a better performance has been reported when separate acoustic models are employed for males and females. Gender classification is also apparent in face recognition, video summarization, human-robot interaction, etc. Although gender classification is rather mature in appli...

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