For the model below, how do output/recreate the validation set so I can save for future reference?
from sklearn.experimental import enable_hist_gradient_boosting
from sklearn.ensemble import HistGradientBoostingClassifier
model= HistGradientBoostingClassifier(max_iter= 500,
n_iter_no_change= 10,
verbose= 1,
scoring= 'roc_auc',
validation_fraction= 0.2,
early_stopping= True,
tol= 0,
learning_rate= 0.11,
max_depth= 5,
random_state= 123)
model.fit(X_train, Y_train)