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#机器学习模型选择与参数调优#三种集成学习算法-GBDT/XGBoost/lightGBM#1-1 GBDT算法:梯度决策树,加强型模型,构建多个决策树进行合并import numpy as npimport matplotlib.pyplot as pltfrom sklearn import e 阅读全文
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#特征工程#1-1sklearn中进行特征选择#筛选法-方差筛选过滤import numpy as npimport arrayfrom sklearn.feature_selection import VarianceThresholdx=[[0,0,1],[0,1,0],[1,0,0],[0,1 阅读全文