Multi-oversampling with Evidence Fusion for Imbalanced Data Classification

Hongpeng Tian, Zuowei Zhang, Zhunga Liu, Jingwei Zuo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Oversampling methods concentrate on creating a balanced dataset by generating samples, widely utilized in classifying imbalanced data. However, current oversampling methods overlook the uncertainty in the samples produced, potentially shifting the data’s distribution and adversely affecting the classification outcomes. To address this problem, we introduce a multi-oversampling with evidence fusion (MOEF) method for imbalanced data classification based on Dempster-Shafer theory. We first design a multi-oversampling strategy to produce various balanced datasets, characterizing the uncertainty of generated samples. Then, we develop a discounting fusion rule based on the inconsistency of data distribution post-oversampling, thereby mitigating the adverse effects of data distribution alterations on classification. Extensive testing on various imbalanced datasets indicates that the proposed MOEF method exhibits more satisfactory performance than other related methods.

Original languageEnglish
Title of host publicationBelief Functions
Subtitle of host publicationTheory and Applications - 8th International Conference, BELIEF 2024, Proceedings
EditorsYaxin Bi, Anne-Laure Jousselme, Thierry Denoeux
PublisherSpringer Science and Business Media Deutschland GmbH
Pages68-77
Number of pages10
ISBN (Print)9783031679766
DOIs
StatePublished - 2024
Event8th International Conference on Belief Functions, BELIEF 2024 - Belfast, United Kingdom
Duration: 2 Sep 20244 Sep 2024

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume14909 LNAI
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference8th International Conference on Belief Functions, BELIEF 2024
Country/TerritoryUnited Kingdom
CityBelfast
Period2/09/244/09/24

Keywords

  • Dempster-Shafer theory
  • Evidence fusion
  • Imbalanced data
  • Oversampling

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