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Learning From Class Imbalance: A Fireworks-Based Resampling for Weighted Pattern Matching Classifier (PMC+)

Learning From Class Imbalance: A Fireworks-Based Resampling for Weighted Pattern Matching Classifier (PMC+)
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Author(s): Sreeja N. K. (PSG College of Technology, India)
Copyright: 2020
Pages: 21
Source title: Handbook of Research on Fireworks Algorithms and Swarm Intelligence
Source Author(s)/Editor(s): Ying Tan (Peking University, China)
DOI: 10.4018/978-1-7998-1659-1.ch005

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Abstract

Learning a classifier from imbalanced data is one of the most challenging research problems. Data imbalance occurs when the number of instances belonging to one class is much less than the number of instances belonging to the other class. A standard classifier is biased towards the majority class and therefore misclassifies the minority class instances. Minority class instances may be regarded as rare events or unusual patterns that could potentially have a negative impact on the society. Therefore, detection of such events is considered significant. This chapter proposes a FireWorks-based Hybrid ReSampling (FWHRS) algorithm to resample imbalance data. It is used with Weighted Pattern Matching based classifier (PMC+) for classification. FWHRS-PMC+ was evaluated on 44 imbalanced binary datasets. Experiments reveal FWHRS-PMC+ is effective in classification of imbalanced data. Empirical results were validated using non-parametric statistical tests.

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