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Accurate and efficient sequential ensemble learning for highly imbalanced multi-class data
Vong,Chi Man1; Du,Jie2
2020-08-01
Source PublicationNEURAL NETWORKS
ISSN0893-6080
Volume128Pages:268-278
Abstract

Multi-class classification for highly imbalanced data is a challenging task in which multiple issues must be resolved simultaneously, including (i) accuracy on classifying highly imbalanced multi-class data; (ii) training efficiency for large data; and (iii) sensitivity to high imbalance ratio (IR). In this paper, a novel sequential ensemble learning (SEL) framework is designed to simultaneously resolve these issues. SEL framework provides a significant property over traditional AdaBoost, in which the majority samples can be divided into multiple small and disjoint subsets for training multiple weak learners without compromising accuracy (while AdaBoost cannot). To ensure the class balance and majority-disjoint property of subsets, a learning strategy called balanced and majority-disjoint subsets division (BMSD) is developed. Unfortunately it is difficult to derive a general learner combination method (LCM) for any kind of weak learner. In this work, LCM is specifically designed for extreme learning machine, called LCM-ELM. The proposed SEL framework with BMSD and LCM-ELM has been compared with state-of-the-art methods over 16 benchmark datasets. In the experiments, under highly imbalanced multi-class data (IR up to 14K; data size up to 493K), (i) the proposed works improve the performance in different measures including G-mean, macro-F, micro-F, MAUC; (ii) training time is significantly reduced.

KeywordHighly Imbalanced Data Multi-class Classification Sequential Ensemble Learning
DOI10.1016/j.neunet.2020.05.010
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaComputer Science ; Neurosciences & Neurology
WOS SubjectComputer Science, Artificial Intelligence ; Neurosciences
WOS IDWOS:000567770800003
PublisherPERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Scopus ID2-s2.0-85084952908
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Citation statistics
Document TypeJournal article
CollectionDEPARTMENT OF COMPUTER AND INFORMATION SCIENCE
Corresponding AuthorDu,Jie
Affiliation1.Department of Computer and Information Science,University of Macau,Macau,SAR 999078,China
2.School of Biomedical Engineering,Health Science Center,Shenzhen University,Shenzhen,518060,China
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Vong,Chi Man,Du,Jie. Accurate and efficient sequential ensemble learning for highly imbalanced multi-class data[J]. NEURAL NETWORKS, 2020, 128, 268-278.
APA Vong,Chi Man., & Du,Jie (2020). Accurate and efficient sequential ensemble learning for highly imbalanced multi-class data. NEURAL NETWORKS, 128, 268-278.
MLA Vong,Chi Man,et al."Accurate and efficient sequential ensemble learning for highly imbalanced multi-class data".NEURAL NETWORKS 128(2020):268-278.
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