نتایج جستجو برای: Ensemble strategy

تعداد نتایج: 383926  

Journal: :journal of industrial engineering, international 2008
p hanafizadeh e salahi parvin p asadolahi n gholami

there are three major strategies to form neural network ensembles. the simplest one is the cross validation strategy in which all members are trained with the same training data. bagging and boosting strategies pro-duce perturbed sample from training data. this paper provides an ideal model based on two important factors: activation function and number of neurons in the hidden layer and based u...

E Salahi Parvin N Gholami P Asadolahi P Hanafizadeh

There are three major strategies to form neural network ensembles. The simplest one is the Cross Validation strategy in which all members are trained with the same training data. Bagging and boosting strategies pro-duce perturbed sample from training data. This paper provides an ideal model based on two important factors: activation function and number of neurons in the hidden layer and based u...

2005
Alexey Tsymbal Mykola Pechenizkiy Padraig Cunningham

Ensemble learning constitutes one of the main directions in machine learning and data mining. Ensembles allow us to achieve higher accuracy, which is often not achievable with single models. One technique, which proved to be effective for constructing an ensemble of diverse classifiers, is the use of feature subsets. Among different approaches to ensemble feature selection, genetic search was s...

2015
Hang Liu Renzhi Chu Zhenan Tang

Sensor drift is the most challenging problem in gas sensing at present. We propose a novel two-dimensional classifier ensemble strategy to solve the gas discrimination problem, regardless of the gas concentration, with high accuracy over extended periods of time. This strategy is appropriate for multi-class classifiers that consist of combinations of pairwise classifiers, such as support vector...

2012
Quan Sun Bernhard Pfahringer

Bagging ensemble selection (BES) is a relatively new ensemble learning strategy. The strategy can be seen as an ensemble of the ensemble selection from libraries of models (ES) strategy. Previous experimental results on binary classification problems have shown that using random trees as base classifiers, BES-OOB (the most successful variant of BES) is competitive with (and in many cases, super...

Journal: :فیزیک زمین و فضا 0
مجید آزادی استادیار، پژوهشگاه هواشناسی و علوم جو، تهران، ایران سعید واشانی استادیار، دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران، ایران سهراب حجام دانشیار، دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران، ایران

accurate quantitative precipitation forecasts (qpfs) have been always a demanding and challenging job in numerical weather prediction (nwp). the outputs of ensemble prediction systems (epss) in the form of probability forecasts provide a valuable tool for probabilistic quantitative precipitation forecasts (pqpfs). in this research, different configurations of wrf and mm5 meso-scale models form ...

Journal: :International Journal of Electrical and Computer Engineering (IJECE) 2018

Journal: :journal of advances in computer research 0
mohammad mohammadi department of computer engineering, nourabad mamasani branch, islamic azad university, nourabad mamasani, iran hamid parvin department of computer engineering, nourabad mamasani branch, islamic azad university, nourabad mamasani, iran eshagh faraji department of computer engineering, nourabad mamasani branch, islamic azad university, nourabad mamasani, iran sajad parvin department of computer engineering, nourabad mamasani branch, islamic azad university, nourabad mamasani, iran

the article suggests an algorithm for regular classifier ensemble methodology. the proposed methodology is based on possibilistic aggregation to classify samples. the argued method optimizes an objective function that combines environment recognition, multi-criteria aggregation term and a learning term. the optimization aims at learning backgrounds as solid clusters in subspaces of the high-dim...

2012
Michael Ovelgönne Andreas Geyer-Schulz

This paper is on a graph clustering scheme inspired by ensemble learning. In short, the idea of ensemble learning is to learn several weak classifiers and use these weak classifiers to form a strong classifier. In this contribution, we use the generic procedure of ensemble learning and determine several weak graph clusterings (with respect to the objective function). From the partition given by...

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