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- W2315674580 abstract "ABSTRACTApproaches to solve the imbalanced classification problem usually focus on rebalancing the class sizes, neglecting the effect of the hidden structure within the majority class. The purpose of this article is to first highlight the effect of sub-clusters within the majority class on the detection of the minority instances and then handle the imbalanced classification problem by learning the structure in the data. We propose a decomposition-based approach to a two-class imbalanced classification problem. This approach works by first learning the hidden structure of the majority class using an unsupervised learning algorithm and thus transforming the classification problem into several classification sub-problems. The base classifier is constructed on each sub-problem. The ensemble is tuned to increase its sensitivity toward the minority class. We also provide a metric for selecting the clustering algorithm by comparing estimates of the stability of the decomposition, which appears necessary for good..." @default.
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- W2315674580 date "2015-12-15" @default.
- W2315674580 modified "2023-09-27" @default.
- W2315674580 title "Imbalanced classification by learning hidden data structure" @default.
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- W2315674580 doi "https://doi.org/10.1080/0740817x.2015.1110269" @default.
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