arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.09788cs.LGstat.ML
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深度合成少数过采样技术

Deep Synthetic Minority Over-Sampling Technique

University of Houston(休斯顿大学)

Hadi Mansourifar, Weidong Shi

摘要:

合成少数过采样技术(SMOTE)是最流行的过采样方法。然而,其随机性使得合成的数据甚至不平衡的分类结果不稳定。这意味着在运行SMOTE n次的情况下,得到n个不同的合成实例,得到n个不同的分类结果。为了解决这个问题,我们在深度学习架构中采用了SMOTE思想。在该方法中,使用深度神经网络回归模型来训练传统SMOTE的输入和输出。所提出的深度回归模型的输入是两个随机选择的数据点,它们连接在一起形成一个双倍大小的向量。该模型的输出是两个随机选择的具有原始维数的向量之间对应的随机插值数据点。实验结果表明,在大多数测试用例中,Deep SMOTE在精度、F1得分和曲线下面积(AUC)方面都优于传统SMOTE。

英文摘要:

Synthetic Minority Over-sampling Technique (SMOTE) is the most popular over-sampling method. However, its random nature makes the synthesized data and even imbalanced classification results unstable. It means that in case of running SMOTE n different times, n different synthesized in-stances are obtained with n different classification results. To address this problem, we adapt the SMOTE idea in deep learning architecture. In this method, a deep neural network regression model is used to train the inputs and outputs of traditional SMOTE. Inputs of the proposed deep regression model are two randomly chosen data points which are concatenated to form a double size vector. The outputs of this model are corresponding randomly interpolated data points between two randomly chosen vectors with original dimension. The experimental results show that, Deep SMOTE can outperform traditional SMOTE in terms of precision, F1 score and Area Under Curve (AUC) in majority of test cases.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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