نتایج جستجو برای: multi layer perceptron artificial neural network

تعداد نتایج: 1644848  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده ریاضی و کامپیوتر 1391

امروزه با گسترش شبکه های کامپیوتری، بحث امنیت شبکه بیش از گذشته مورد توجه پژوهشگران قرار گرفته است. در این راستا تشخیص نفوذ به عنوان یکی از اجزای اصلی برقراری امنیت در شبکه های کامپیوتری شناخته می شود. شناسایی نفوذ در شبکه های کامپیوتری و جلوگیری از آن به عنوان یکی از مباحث اصلی در همایش های امنیتی جوامع پیشرفته مطرح می باشد. در این راستا روش های گوناگونی جهت مقابله با حملات در قالب سیستم های ت...

E. Alizadeh haghighi, H. Taghavifar, S. Jafarmadar,

Artificial neural network was considered in previous studies for prediction of engine performance and emissions. ICA methodology was inspired in order to optimize the weights of multilayer perceptron (MLP) of artificial neural network so that closer estimation of output results can be achieved. Current paper aimed at prediction of engine power, soot, NOx, CO2, O2, and temperature with the ai...

ژورنال: مهندسی دریا 2004
Aghakoochak, Ali Akbar, فتحی, علی,

In order to predict the residual life of offshore platforms and establish efficient schedule for underwater inspection and repair, it is necessary to estimate the fatigue crack growth rate in tubular joints properly. Linear Elastic Fracture Mechanics and Stress Intensity Factor are applicable tools for evaluating growth rate of existing fatigue cracks in offshore tubular joints. In the past sev...

A. Barazandeh A. Esmailizadeh M. Khorshidi-Jalali M.R. Mohammadabadi, O.I. Babenko

The artificial neural networks (ANN) are the learning algorithms and mathematical models, which mimic the information processing ability of human brain and can be used to non linear and complex data. The aim of this study was to compare artificial neural network and regression models for prediction of body weight in Raini Cashmere goat. The data of 1389 goats for body weight, height at withers ...

1999
G. Rennick Yianni Attikiouzel Anthony Zaknich

Five classifiers including the K-means, Fuzzy c-means, K-nearest neighbour, Multi-Layer Perceptron Neural Network and Probabilistic Neural Network classifiers are compared for application to colour grade classification and detection of bruising of Granny Smith apples. A number of suitable discriminate features are determined heuristically for the categorisation of four classes including: high g...

2010
Mutasem khalil Sari Alsmadi Khairuddin Bin Omar Shahrul Azman Noah

A multilayer perceptron is a feed forward artificial neural network model that maps sets of input data onto a set of appropriate output. It is a modification of the standard linear perceptron in that it uses three or more layers of neurons (nodes) with nonlinear activation functions and is more powerful than the perceptron in that it can distinguish data that is not linearly separable, or separ...

2008
Hadi Veisi

In this paper we present an adaptive method for image compression that is based on complexity level of the image. The basic compressor/de-compressor structure of this method is a multilayer perceptron artificial neural network. In adaptive approach different Back-Propagation artificial neural networks are used as compressor and de-compressor and this is done by dividing the image into blocks, c...

2007
Noor Izzri Abdul Wahab Azah Mohamed Aini Hussain

This paper presents transient stability assessment of electrical power system using probabilistic neural network (PNN) and principle component analysis. Transient stability of a power system is first determined based on the generator relative rotor angles obtained from time domain simulation outputs. Simulations were carried out on the IEEE 9-bus test system considering three phase faults on th...

Journal: :Expert Syst. Appl. 2011
Erkam Güresen Gülgün Kayakutlu Tugrul U. Daim

Forecasting stock exchange rates is an important financial problem that is receiving increasing attention. During the last few years, a number of neural network models and hybrid models have been proposed for obtaining accurate prediction results, in an attempt to outperform the traditional linear and nonlinear approaches. This paper evaluates the effectiveness of neural network models which ar...

2007
Engin Avci

In this paper, an automatic system is presented for word recognition using real Turkish word signals. This paper especially deals with combination of the feature extraction and classification from real Turkish word signals. A Discrete Wavelet Neural Network (DWNN) model is used, which consists of two layers: discrete wavelet layer and multi-layer perceptron. The discrete wavelet layer is used f...

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