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from sklearn.datasets import load_breast_cancer from sklearn.ensemble import RandomForestClassifier from sklearn.model_selection import GridSearchCV from sklearn.model_selection import cross_val_score import matplotlib.pyplot as plt import pandas as pd imp

​机器学习中调参的两种方法：学习曲线，网格搜索 %matplotlib inline from sklearn.tree import DecisionTreeClassifier from sklearn.ensemble import RandomForestClassifier from sklearn.datasets import load_wine wine = load_wine() wine.data wine.target array([0, 0, 0, 0, 0, 0,