邓晓衡

L. C, X. Deng, H. Shen, et al. Dycusboost: Adaboost-based imbalanced learning using dynamic clustering and undersampling[C]//2018 IEEE 16th Intl Conf on Dependable, Autonomic and Secure Computing, 16th Intl Conf on Pervasive Intelligence and Computing, 4th Intl Conf on Big Data Intelligence and Computing and Cyber Science and Technology Congress (DASC/PiCom/DataCom/CyberSciTech). IEEE, 2018: 208-215.

发布时间：2024-03-13

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发表刊物：2018 IEEE 16th Intl Conf on Dependable, Autonomic and Secure Computing, 16th Intl Conf on Pervasive Intelligence and Computing, 4th Intl Conf on Big Data Intelligence and Computing and Cyber Science and Technology Congress (DASC/PiCom/DataCom/CyberSciTech)

摘要：Abstract—Ensemble learning is a powerful approach to classifying imbalanced data in machine learning. Adaboost as one of Ensemble learning, which often modified to deal with imbalanced problem. However, due to the variation of sample weights in Adaboost algorithm, the distribution of datasets is not consistent for each weak classifier. As a result, feature space-based resampling fails to reflect the transformation of distribution. Aiming at this problem, this paper proposes DYCUSBoost, an Adaboost-based imbalanced learning approach using dynamic clustering and undersampling. In DYCUSBoost, the clustering process is synchronized with the iteration of Adaboost, where clusters formed in different periods of Adaboost are adjusted, which make DYCUSBoost grasp the transformation of the distribution. The undersampling method assesses the importance of each cluster, and make important ones collect more samples. Through experimental verification, DYCUSBoost demonstrates desirable performance in terms of commonly accepted evaluating metrics, e.g., AUC, G-Mean, F-Measure, etc. Moreover, the prediction stability of DYCUSBoost outperforms most undersampling methods.

备注：http://faculty.csu.edu.cn/dengxiaoheng/zh_CN/lwcg/10445/content/49195.htm

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