نتایج جستجو برای: neural network and genetic algorithm

تعداد نتایج: 17083815  

Abstract— In order to provide complete security in a computer system and to prevent intrusion, intrusion detection systems (IDS) are required to detect if an attacker crosses the firewall, antivirus, and other security devices. Data and options to deal with it. In this paper, we are trying to provide a model for combining types of attacks on public data using combined methods of genetic algorit...

Journal: :pollution 2015
zahra zangeneh sirdari aminuddin ab. ghani nasim zangeneh sirdari

bedload transport is an essential component of river dynamics and estimation of its rate is important to many aspects of river management. in this study, measured bedload by helley- smith sampler was used to estimate the bedload transport of kurau river in malaysia. an artificial neural network, genetic programming and a combination of genetic programming and a neural network were used to estim...

ژورنال: محاسبات نرم 2016

Prediction of urban air pollution is an important subject in environmental studies. However, the required data for prediction is not available for every interested location. So, different models have been proposed for air pollution prediction. The feature selection (among 20 features given in Meteorology Organization data) was performed by binary gravitational search algorithm (BGSA) in this st...

In this article, a new combined approach of a decision tree and clustering is presented to predict the transmission of genetic diseases. In this article, the performance of these algorithms is compared for more accurate prediction of disease transmission under the same condition and based on a series of measures like the positive predictive value, negative predictive value, accuracy, sensitivit...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1389

abstract: country’s fiber optic network, as one of the most important communication infrastructures, is of high importance; therefore, ensuring security of the network and its data is essential. no remarkable research has been done on assessing security of the country’s fiber optic network. besides, according to an official statistics released by ertebatat zirsakht company, unwanted disconnec...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شاهد - دانشکده فنی و مهندسی 1387

در این پروژه هدف بررسی و ارائه روشی برای خودکار سازی طراحی مدارات آنالوگ می باشد. خودکار کردن فرآیند طراحی در حوزه آنالوگ هدفی قدیمی و پرسابقه است که در طی 20 سال گذشته و بعد از ورود کامپیوتر به حوزه طراحی مدارات الکترونیک تلاش های زیادی در این زمینه صورت گرفته است. برای نیل به این هدف روش های گوناگونی ارائه شده است که در این تحقیق، این روش ها مورد نقد و بررسی قرار گرفته و در نهایت روشی الگوریت...

Due to today’s advancement in technology and businesses, fraud detection has become a critical component of financial transactions. Considering vast amounts of data in large datasets, it becomes more difficult to detect fraud transactions manually. In this research, we propose a combined method using both data mining and statistical tasks, utilizing feature selection, resampling and cost-...

Gholam Khayati, Mehrdad Mahdavi Jafari Soheil Soroushian,

Among artificial intelligence approaches, artificial neural networks (ANNs) and genetic algorithm (GA) are widely applied for modification of materials property in engineering science in large scale modeling. In this work artificial neural network (ANN) and genetic algorithm (GA) were applied to find the optimal conditions for achieving the maximum hardness of Al6061 reinforced by multiwall car...

Journal: :iranian journal of medical physics 0
zohreh dehghani bidgoli ph.d. student, biomedical engineering dept., faculty of electrical engineering, tarbiat modares university, tehran, iran. mohammad hosein miranbaygi associate professor, biomedical engineering dept., faculty of electrical engineering, tarbiat modares university, tehran, iran. rasool malekfar associate professor, physics dept., faculty of basic sciences, tarbiat modares university, tehran, iran.

introduction: raman spectroscopy, that is a spectroscopic technique based on inelastic scattering of monochromatic light, can provide valuable information about molecular vibrations, so using this technique we can study molecular changes in a sample. material and methods: in this research, 153 raman spectra obtained from normal and dried skin samples. baseline and electrical noise were eliminat...

Amin Tafakori Hossein Shahverdi Mehdi Zohoor,

Three important parameters in designing a closed die for forging process are ratio of width to flash thickness, ratio of  height to billet diameter and the friction factor. In this paper the influences of these parameters on the required force for the forging and percentage of die filling were investigated. It was found that by controlling the flash dimension, the material loss is reduced and t...

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