نتایج جستجو برای: ga and ann had better accuracy than multivariate regression

تعداد نتایج: 16951785  

2018
Rensheng Cao Mingyi Fan Jiwei Hu Wenqian Ruan Xianliang Wu Xionghui Wei

Highly promising artificial intelligence tools, including neural network (ANN), genetic algorithm (GA) and particle swarm optimization (PSO), were applied in the present study to develop an approach for the evaluation of Se(IV) removal from aqueous solutions by reduced graphene oxide-supported nanoscale zero-valent iron (nZVI/rGO) composites. Both GA and PSO were used to optimize the parameters...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی شاهرود - دانشکده شیمی 1391

در قسمت اول این تحقیق، مطالعات ارتباط کمی ساختار- خاصیت (qspr) بر روی شاخص بازداری 60 ترکیب آلی فرار (vocs) انجام گرفت. دو روش برازش مرحله ای (sr) و الگوریتم ژنتیک (ga) برای انتخاب توصیف کننده های مناسب استفاده شد. توصیف کننده های انتخاب شده از این دو روش برای مدل سازی و پیش بینی شاخص بازداری این ترکیبات وارد شبکه عصبی مصنوعی (ann) شدند. به منظور بررسی اعتبار این مدل ها از روش های مختلفی مانند ...

2015
Salim Lahmiri

This paper compares the accuracy of three hybrid intelligent systems in forecasting ten international stock market indices; namely the CAC40, DAX, FTSE, Hang Seng, KOSPI, NASDAQ, NIKKEI, S&P500, Taiwan stock market price index, and the Canadian TSE. In particular, genetic algorithms (GA) are used to optimize the topology and parameters of the adaptive time delay neural networks (ATNN) and the t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده ادبیات و علوم انسانی 1390

this study was carried out to investigate the effects of integrative vs. instrumental motivation, learning strategy use and gender on iranian efl learners. to this end, 120 efl learners both male and female majoring in english language and literature at shiraz university participated in the study. in order to conduct this study three instruments were used: oxford quick placement test, motivatio...

Journal: :آب و خاک 0
محمد قبائی سوق ابوالفضل مساعدی موسی حسام ابوطالب هزارجریبی

abstract process of evapotranspiration (eto) is a major component of the hydrologic cycle that its accurate estimation plays an important role to achieve sustainable development in water balance, irrigation system design and planning and management of water resources. being a function of different metrological parameters and their interactions, evapotranspiration is a complex, nonlinear phenome...

2009
András Fülöp Jenő Hancsók

The aim of this study was to compare the prediction efficiency of different types of linear calibration models using near infrared absorbance spectral data of vegetable oils. The applied model types were PCA-MLR (Principal Component Analysis-Multiple Linear Regression), PLS (Partial Least Squares regression), PCA-ANN (Principal Component Analysis-Artificial Neural Network) and GA-ANN (Genetic A...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک - دانشکده علوم انسانی 1388

abstract the aim of this study was threefold: (1) to investigate the relationship between knowledge of semantic prosody and efl learners general language proficiency; (2) to examine the relationship between qualitative as well as quantitative knowledge of words, and (3) to compare the performance of efl learner on receptive and productive measures of semantic prosody. the study is based on a...

The quantitative structure-retention relationship (QSRR) of nanoparticles in roadside atmosphere against the comprehensive two-dimensional gas chromatography which was coupled to high-resolution time-of-flight mass spectrometry was studied. The genetic algorithm (GA) was employed to select the variables that resulted in the best-fitted models. After the variables were selected, the linear multi...

Journal: :Journal of Manufacturing Engineering 2022

The purpose of this comparative study is to improve the predictive accuracy cutting force during turning Ti-6Al-4V on a lathe machine. By optimizing machining process parameters such as speed, feed rate, and depth cut, in can be improved significantly. Cutting one crucial characteristics that must monitored order enhance tool life surface finish workpiece. This paper based experimental dataset ...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده ادبیات و علوم انسانی 1393

abstract target-oriented approaches to translation studies are regarded as recent theories of translation. one of the most famous theories among these approaches is descriptive translation studies presented by toury (1995). this theory gives a new dimension to translation studies and gives importance to the descriptive rather than prescriptive studies. it also identifies three sets of transla...

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