分类问题样本不均衡问题

1. 欠采样

• 随机欠采样
• EasyEnsemble
• BalanceCascade

Exploratory Undersampling forClass-Imbalance Learning

2. 过采样

• 随机过采样
• SMOTE
• Borderline-SMOTE

SMOTE: Synthetic Minority Over-sampling Technique
Borderline-SMOTE: A New Over-Sampling Method in Imbalanced Data Sets Learning

3. cost-sensitive learning

• Adacost

4.评价方式

• F1-score
• G-Mean
• roc_auc_score