نتایج جستجو برای: probabilistic neural network pnn

تعداد نتایج: 888361  

Journal: :Jurnal serambi engineering 2023

Tujuan penelitian ini untuk mengklasifikasikan citra Songket Aceh. Data menggunakan sepuluh motif Aceh dan data diperoleh dari tempat usaha tenun Nyak Mu. Tahapan adalah akuisisi citra, pra-proses, ekstraksi fitur, klasifikasi evaluasi. Ekstraksi fitur tekstur metode Gray Level Co-occurrence Matrix (GLCM). Fitur-fitur yang digunakan pada entropy, energy, sum of squares: variance, difference ent...

Journal: :Computer methods and programs in biomedicine 2008
Pantelis Georgiadis Dionisis A. Cavouras Ioannis Kalatzis Antonis Daskalakis George C. Kagadis Koralia Sifaki Menelaos Malamas George Nikiforidis Ekaterini Solomou

The aim of the present study was to design, implement and evaluate a software system for discriminating between metastatic and primary brain tumors (gliomas and meningiomas) on MRI, employing textural features from routinely taken T1 post-contrast images. The proposed classifier is a modified probabilistic neural network (PNN), incorporating a non-linear least squares features transformation (L...

Journal: :Mathematical Problems in Engineering 2022

This paper presents a prototype implementation of arrhythmia classification using Probabilistic neural network (PNN). Arrhythmia is an irregular heartbeat, resulting in severe heart problems if not diagnosed early. Therefore, accurate and robust vital task for cardiac patients. The ECG has been performed PNN into eight classes unique combination six features: rate, spectral entropy, 4th order a...

2007
Chung-Ming Wu Yasser M. Kadah

Advances in clinical medical imaging have brought about the routine production of vast numbers of medical images that need to be analyzed. As a result an enormous amount of computer vision research effort has been targeted at achieving automated medical image analysis. Computed Tomography (CT) is highly accurate for diagnosing liver tumors. This study aimed to evaluate the potential role of the...

2002
Todor Ganchev

In this paper, a text-independent Probabilistic Neural Network (PNN)-based Speaker Verification system is presented. Modular structure with a distinct PNN for each enrolled speaker is used. A gender-dependent universal background model is built to represent the impostor speakers. A detailed description of the system, as well as the time required for training and processing all the test trials i...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2007
Yuxi Zhang Qing Xiong Gang Yang Menglong Li Jing Zhang

The application of chemometrics to analyze the information of the cis/trans structure of alkenes in infrared spectra (IR) is introduced. For data from the OMNIC IR spectral database, two feature selection methods, Fisher ratios and genetic algorithm-partial least squares (GA-PLS), and two classification methods, support vector machine (SVM) and probabilistic neural network (PNN), have been used...

2004
Linilson Padovese Silmara A. S. Vicente

The present work analyses the use of the Probabilistic Neural Network (PNN) as an automatic diagnosis system for detecting defects in rolling bearings using vibration signals. The influence of the metric and that of the mono and multi sigma in the PNN performance is analyzed and discussed. Genetic algorithms are used in order to optimize the sigma set that maximizes the PNN detection and classi...

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 ...

2016
Pravin Kshirsagar Sudhir Akojwar Russell Eberhart James Kennedy Zhiyong li Wei Zhou Bo Xu Holger H. Hoos B. S. Jung B. W. Karney

This paper introduces hybridization of particle swarm optimization (PSO) with genetic algorithm (GA) denoted as PSO+GA provides an efficient approach which is used to solve non linear chaotic datasets. The proposed algorithm employed in probabilistic neural network(PNN) which is a variant of radial basic function artificial neural network (RBFANN) for finding precise value spread factor for acc...

Journal: :CoRR 2015
Hamidreza Farhidzadeh

In this paper, we propose another version of help-training approach by employing a Probabilistic Neural Network (PNN) that improves the performance of the main discriminative classifier in the semi-supervised strategy. We introduce the PNN-training algorithm and use it for training the support vector machine (SVM) with a few numbers of labeled data and a large number of unlabeled data. We try t...

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