نتایج جستجو برای: termsclassifier ensemble

تعداد نتایج: 43161  

2009

applications of supervised and unsupervised ensemble methods What to say and what to do when mostly your friends love reading? Are you the one that don't have such hobby? So, it's important for you to start having that hobby. You know, reading is not the force. We're sure that reading will lead you to join in better concept of life. Reading will be a positive activity to do every time. And do y...

2007
Manuela Zanda Gavin Brown Giorgio Fumera Fabio Roli

We investigate the theoretical links between a regression ensemble and a linearly combined classification ensemble. First, we reformulate the Tumer & Ghosh model for linear combiners in a regression context; we then exploit this new formulation to generalise the concept of the “Ambiguity decomposition”, previously defined only for regression tasks, to classification problems. Finally, we propos...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2014
ebrahim biniaz delijani mahmoud reza pishvaie ramin bozorgmehry boozarjomehry

to perform any economic management of a petroleum reservoir in real time, a predictable and/or updateable model of reservoir along with uncertainty estimation ability is required. one relatively recent method is a sequential monte carlo implementation of the kalman filter: the ensemble kalman filter (enkf). the enkf not only estimate uncertain parameters but also provide a recursive estimate of...

Journal: :international journal of civil engineering 0
h. shakib jala-al-ahamad street, tehran, p.o.box:14115-143; f. omidinasab jala-al-ahamad street, tehran, p.o.box:14115-143; m.t. ahmadi jala-al-ahamad street, tehran, p.o.box:14115-143;

elevated water tanks as one of the main lifeline elements are the structures of high importance. since they are extremely vulnerable under lateral forces, their serviceability performance during and after strong earthquakes is a matter of concern. as such, in recent years, the seismic behavior of water tanks has been the focus of a significant amount of studies. in the present work, three reinf...

مقاله حاضر به بررسی سودمندی رگرسیون‌های تجمیعی و روش‌های انتخاب متغیرهای پیش‌بین بهینه (شامل روش مبتنی بر همبستگی و ریلیف) برای پیش‌بینی بازده سهام شرکت‌های پذیرفته شده در بورس اوراق بهادار تهران می‌پردازد. به‌منظور ارزیابی عملکرد رگرسیون تجمیعی، معیارهای ارزیابی (شامل میانگین قدرمطلق درصد خطا، مجذور مربع میانگین خطا و ضریب تعیین) مربوط به پیش‌بینی این روش، با رگرسیون خطی و شبکه‌های عصبی مصنوعی...

This paper investigates the effect of diversity caused by Negative Correlation Learning(NCL) in the combination of neural classifiers and presents an efficient way to improve combining performance. Decision Templates and Averaging, as two non-trainable combining methods and Stacked Generalization as a trainable combiner are investigated in our experiments . Utilizing NCL for diversifying the ba...

افضل‌زاده, رضا, ستایشی, سعید, واعظ‌زاده, مهدی, پیوسته, مطهره,

Melting process of perylene is investigated using molecular dynamics simulation. Some of thermodynamic properties such as potential energy and transition order parameter are calculated as a function of temperature in the range of 500 K-600 K. These calculations are performed by two different methods in NPT and NVT ensembles. The selected interaction potential is Re-squared and the simulations a...

Journal: :journal of ai and data mining 2014
vahid majidnezhad

in this paper, first, an initial feature vector for vocal fold pathology diagnosis is proposed. then, for optimizing the initial feature vector, a genetic algorithm is proposed. some experiments are carried out for evaluating and comparing the classification accuracies which are obtained by the use of the different classifiers (ensemble of decision tree, discriminant analysis and k-nearest neig...

Journal: :journal of water sciences research 2011
m akbari k solaimani m mahdavi m habibnejhad

ecosystem of arid and semiarid regions of the world, much of the country lies in the sensitive and fragile environment canvases are that factors in the extinction and destruction are easily destroyed in this paper, artificial neural networks (anns) are introduced to obtain improved regional low-flow estimates at ungauged sites. a multilayer perceptron (mlp) network is used to identify the funct...

Journal: :Neurocomputing 2015
Borut Sluban Nada Lavrac

The advantage of ensemble methods over single methods is their ability to correct the errors of individual ensemble members and thereby improve the overall ensemble performance. This paper explores the relation between ensemble diversity and noise detection performance in the context of ensemble-based class noise detection by studying different diversity measures on a range of heterogeneous noi...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید