نتایج جستجو برای: ensemble classification

تعداد نتایج: 530030  

Journal: :journal of medical signals and sensors 0
reza azmi boshra pishgoo narges norozi samira yeganeh

brain mr images tissue segmentation is one of the most important parts of the clinical diagnostic tools. pixel classification methods have been frequently used in the image segmentation with two supervised and unsupervised approaches up to now. supervised segmentation methods lead to high accuracy but they need a large amount of labeled data, which is hard, expensive and slow to obtain. moreove...

Journal: :Journal of risk and financial management 2021

We propose a new ensemble classification algorithm, named super random subspace (Super RaSE), to tackle the sparse problem. The proposed algorithm is motivated by (RaSE). RaSE method was shown be flexible framework that can coupled with any existing base classification. However, success of largely depends on proper choice classifier, which unfortunately unknown us. In this work, we show Super a...

2009
Lior Rokach

The idea of ensemble methodology is to build a predictive model by integrating multiple models. It is well-known that ensemble methods can be used for improving prediction performance. In this chapter we provide an overview of ensemble methods in classification tasks. We present all important types of ensemble methods including boosting and bagging. Combining methods and modeling issues such as...

Journal: :Computer methods and programs in biomedicine 2017
Roberta B. Oliveira Aledir Silveira Pereira João Manuel R. S. Tavares

BACKGROUND AND OBJECTIVES The number of deaths worldwide due to melanoma has risen in recent times, in part because melanoma is the most aggressive type of skin cancer. Computational systems have been developed to assist dermatologists in early diagnosis of skin cancer, or even to monitor skin lesions. However, there still remains a challenge to improve classifiers for the diagnosis of such ski...

Journal: :IEEE Intelligent Informatics Bulletin 2008
Zili Zhang Pengyi Yang

Different data classification algorithms have been developed and applied in various areas to analyze and extract valuable information and patterns from large datasets with noise and missing values. However, none of them could consistently perform well over all datasets. To this end, ensemble methods have been suggested as the promising measures. This paper proposes a novel hybrid algorithm, whi...

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...

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