特征选择 Feature selection

• 1.13 特征选择 Feature selection
• • 1.13.1. Removing features with low variance（删除第方差的特征）
  • 1.13.2. Univariate feature selection(单变量特征选择)
  • 1.13.3. Recursive feature elimination(递归特征消除)
  • 1.13.4. Feature selection using SelectFromModel
  • • 1.13.4.1. L1-based feature selection
    • • LinearSVC
      • Lasso regression
    • 1.13.4.2. Tree-based feature selection