Publication 2005 Issue No. 6 - June Abstract - KBA: Kernel Boundary Alignment Considering Imbalanced Data Distribution
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KBA: Kernel Boundary Alignment Considering Imbalanced Data Distribution
June 2005 (vol. 17 no. 6)
pp. 786-795
 ASCII Text x Gang Wu, Edward Y. Chang, "KBA: Kernel Boundary Alignment Considering Imbalanced Data Distribution," IEEE Transactions on Knowledge and Data Engineering, vol. 17, no. 6, pp. 786-795, June, 2005.
 BibTex x @article{ 10.1109/TKDE.2005.95,author = {Gang Wu and Edward Y. Chang},title = {KBA: Kernel Boundary Alignment Considering Imbalanced Data Distribution},journal ={IEEE Transactions on Knowledge and Data Engineering},volume = {17},number = {6},issn = {1041-4347},year = {2005},pages = {786-795},doi = {http://doi.ieeecomputersociety.org/10.1109/TKDE.2005.95},publisher = {IEEE Computer Society},address = {Los Alamitos, CA, USA},}
 RefWorks Procite/RefMan/Endnote x TY - JOURJO - IEEE Transactions on Knowledge and Data EngineeringTI - KBA: Kernel Boundary Alignment Considering Imbalanced Data DistributionIS - 6SN - 1041-4347SP786EP795EPD - 786-795A1 - Gang Wu, A1 - Edward Y. Chang, PY - 2005KW - Imbalanced-data trainingKW - support vector machinesKW - supervised classification.VL - 17JA - IEEE Transactions on Knowledge and Data EngineeringER -
An imbalanced training data set can pose serious problems for many real-world data mining tasks that employ SVMs to conduct supervised learning. In this paper, we propose a kernel-boundary-alignment algorithm, which considers THE training data imbalance as prior information to augment SVMs to improve class-prediction accuracy. Using a simple example, we first show that SVMs can suffer from high incidences of false negatives when the training instances of the target class are heavily outnumbered by the training instances of a nontarget class. The remedy we propose is to adjust the class boundary by modifying the kernel matrix, according to the imbalanced data distribution. Through theoretical analysis backed by empirical study, we show that our kernel-boundary-alignment algorithm works effectively on several data sets.

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Index Terms:
Imbalanced-data training, support vector machines, supervised classification.
Citation:
Gang Wu, Edward Y. Chang, "KBA: Kernel Boundary Alignment Considering Imbalanced Data Distribution," IEEE Transactions on Knowledge and Data Engineering, vol. 17, no. 6, pp. 786-795, June 2005, doi:10.1109/TKDE.2005.95
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