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DOI: 10.14569/IJACSA.2022.0130461
PDF

Adaptive Generation-based Approaches of Oversampling using Different Sets of Base and Nearest Neighbor’s Instances

Author 1: Hatem S Y Nabus
Author 2: Aida Ali
Author 3: Shafaatunnur Hassan
Author 4: Siti Mariyam Shamsuddin
Author 5: Ismail B Mustapha
Author 6: Faisal Saeed

International Journal of Advanced Computer Science and Applications(IJACSA), Volume 13 Issue 4, 2022.

  • Abstract and Keywords
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Abstract: Standard classification algorithms often face a challenge of learning from imbalanced datasets. While several approaches have been employed in addressing this problem, methods that involve oversampling of minority samples remain more widely used in comparison to algorithmic modifications. Most variants of oversampling are derived from Synthetic Minority Oversampling Technique (SMOTE), which involves generation of synthetic minority samples along a point in the feature space between two minority class instances. The main reasons these variants produce different results lies in (1) the samples they use as initial selection / base samples and the nearest neighbors. (2) Variation in how they handle minority noises. Therefore, this paper presented different combinations of base and nearest neighbor’s samples which never used before to monitor their effect in comparison to the standard oversampling techniques. Six methods; three combinations of Only Danger Oversampling (ODO) techniques, and three combinations of Danger Noise Oversampling (DNO) techniques are proposed. The ODO’s and DNO’s methods use different groups of samples as base and nearest neighbors. While the three ODO’s methods do not consider the minority noises, the three DNO’s include the minority noises in both the base and neighbor samples. The performances of the proposed methods are compared to that of several standard oversampling algorithms. We present experimental results demonstrating a significant improvement in the recall metric.

Keywords: Class imbalance; nearest neighbors; base samples; initial selection; SMOTE

Hatem S Y Nabus, Aida Ali, Shafaatunnur Hassan, Siti Mariyam Shamsuddin, Ismail B Mustapha and Faisal Saeed, “Adaptive Generation-based Approaches of Oversampling using Different Sets of Base and Nearest Neighbor’s Instances” International Journal of Advanced Computer Science and Applications(IJACSA), 13(4), 2022. http://dx.doi.org/10.14569/IJACSA.2022.0130461

@article{Nabus2022,
title = {Adaptive Generation-based Approaches of Oversampling using Different Sets of Base and Nearest Neighbor’s Instances},
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2022.0130461},
url = {http://dx.doi.org/10.14569/IJACSA.2022.0130461},
year = {2022},
publisher = {The Science and Information Organization},
volume = {13},
number = {4},
author = {Hatem S Y Nabus and Aida Ali and Shafaatunnur Hassan and Siti Mariyam Shamsuddin and Ismail B Mustapha and Faisal Saeed}
}



Copyright Statement: This is an open access article licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, even commercially as long as the original work is properly cited.

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