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- W82836655 abstract "No consistent conclusions have been drawn from existing studies regarding the effectiveness of different approaches to learning from imbalanced data. In this paper we apply bias-variance analysis to study the utility of different strategies for imbalanced learning. We conduct experiments on 15 real-world imbalanced datasets of applying various re-sampling and induction bias adjustment strategies to the standard decision tree, naive bayes and k-nearest neighbour (k-NN) learning algorithms. Our main findings include: Imbalanced class distribution is primarily a high bias problem, which partly explains why it impedes the performance of many standard learning algorithms. Compared to the re-sampling strategies, adjusting induction bias can more significantly vary the bias and variance components of classification errors. Especially the inverse distance weighting strategy can significantly reduce the variance errors for k-NN. Based on these findings we offer practical advice on applying the re-sampling and induction bias adjustment strategies to improve imbalanced learning." @default.
- W82836655 created "2016-06-24" @default.
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- W82836655 date "2011-01-17" @default.
- W82836655 modified "2023-09-24" @default.
- W82836655 title "An empirical study of learning from imbalanced data" @default.
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