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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Perry, T. Bader-El-Den, M. Cooper, S. |
| Copyright Year | 2015 |
| Description | Author affiliation: Seagate Technol., Havant, UK (Cooper, S.) || Sch. of Comput., Univ. of Portsmouth, Portsmouth, UK (Perry, T.; Bader-El-Den, M.) |
| Abstract | Classification is one of the most researched problems in machine learning, since the 1960s a myriad of different techniques have been proposed. The purpose of a classification algorithm, also known as a `classifier', is to identify what class, or category an observation belongs to. In many real-world scenarios, datasets tend to suffer from class imbalance, where the number of observations belonging to one class greatly outnumbers that of the observations belonging to other classes. Class imbalance has been shown to hinder the performance of classifiers, and several techniques have been developed to improve the performance of imbalanced classifiers. Using a cost matrix is one such technique for dealing with class imbalance, however it requires a matrix to be either pre-defined, or manually optimized. This paper proposes an approach for automatically generating optimized cost matrices using a genetic algorithm. The genetic algorithm can generate matrices for classification problems with any number of classes, and is easy to tailor towards specific use-cases. The proposed approach is compared against unoptimized classifiers and alternative cost matrix optimization techniques using a variety of datasets. In addition to this, storage system failure prediction datasets are provided by Seagate UK, the potential of these datasets is investigated. |
| Starting Page | 680 |
| Ending Page | 687 |
| File Size | 240311 |
| Page Count | 8 |
| File Format | |
| e-ISBN | 9781479974924 |
| DOI | 10.1109/CEC.2015.7256956 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-05-25 |
| Publisher Place | Japan |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Drives Genomics Bioinformatics Sociology Statistics Genetic algorithms |
| Content Type | Text |
| Resource Type | Article |
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