python - learning_curve 返回 train_sizes_abs 的 nan 值

Question

我总是从 sklearn learning_curve 函数中获取 train_sizes_abs 的 nan 值：（https://scikit-learn.org/stable/modules/generated/sklearn.model_selection.learning_curve.html）

train_sizes_abs, train_score, val_score = learning_curve(model, X_train, y_train,
    cv=2,
    scoring="f1",
    shuffle=True,
    random_state=3,
    train_sizes=np.linspace(0.1, 1, 5))
´´´

the model comes from a pipe, where I allready ran model.fit(X_train,y_train)

标签： pythonmachine-learningscikit-learn