random-forest - 错误 'RandomForestClassifier' 对象没有属性 'target_type_'

Question

当我运行这段代码时:

from yellowbrick.classifier import ROCAUC
from sklearn.ensemble import RandomForestClassifier
rf = RandomForestClassifier(**{"max_features": 0.4, "n_estimators":15,"min_samples_leaf": 0.1,"random_state":42})
rf.fit(X_train, y_train)
roc_viz = ROCAUC(rf)
roc_viz.score(X_test, y_test)

我有这个错误

'RandomForestClassifier' object has no attribute 'target_type_'

有人有想法吗？谢谢

当我调试时，按照指令 roc_viz = ROCAUC(rf)

我得到错误:

unable to get repr for <class 'yellowbrick.classifier.rocauc.ROCAUC'

Answer 1

一些事情

1. 你总是需要适配可视化工具

2. 如果您已经拟合了您的模型，那么您必须将参数 is_fitted 设置为 True

   rf = RandomForestClassifier(**{"max_features": 0.4, "n_estimators":15,"min_samples_leaf": 0.1,"random_state":42})

   rf.fit(X_train, y_train)

   roc_viz = ROCAUC(rf, is_fitted=True)

   roc_viz.fit(X_train, y_train)

   roc_viz.score(X_test, y_test)