[英]How to make single prediction from bagging model
I have the following line of code:我有以下代码行:
# Setting the values for the number of folds
num_folds = 10
seed = 7
# Separating data into folds
kfold = KFold(num_folds, True, random_state = seed)
# Create the unit model (classificador fraco)
cart = DecisionTreeClassifier()
# Setting the number of trees
num_trees = 100
# Creating the bagging model
model = BaggingClassifier(base_estimator = cart, n_estimators = num_trees, random_state = seed)
# Cross Validation
resultado = cross_val_score(model, X, Y, cv = kfold)
# Result print
print("Acurácia: %.3f" % (resultado.mean() * 100))
This is a ready-made code that I got from the internet, which is obviously predefined for testing my cross-validated TRAINING data and knowing the accuracy of the bagging algorithm.这是我从网上得到的现成代码,显然是为测试我的交叉验证的 TRAINING 数据和了解 bagging 算法的准确性而预定义的。
I would like to know if I can apply it to my TEST data (data without output 'Y')我想知道是否可以将其应用于我的测试数据(没有 output 'Y' 的数据)
The code is a bit confusing and I can't model it.代码有点混乱,我不能 model 它。
I'm looking for something like:我正在寻找类似的东西:
# Training the model
model.fit(X, Y)
# Making predictions
Y_pred = model.predict(X_test)
I want to use the trained bagging model on top of the training data in the test data and make predictions but I don't know how to modify the code我想在测试数据中的训练数据之上使用经过训练的装袋 model 并进行预测,但我不知道如何修改代码
You have everything to predict new data already.您已经拥有预测新数据的一切。 I am providing a small example with toy data and comments to make it clear.
我提供了一个带有玩具数据和评论的小例子,以使其清楚。
from sklearn.ensemble import BaggingClassifier
cart = BaggingClassifier()
X_train = [[0, 0], [1, 1]] # training data
Y_train = [0, 1] # training labels
cart.fit(X_train, Y_train) # model is trained
y_pred = cart.predict([ [0,1] ]) # new data
print(y_pred)
# prints [0], so it predicts the new sample (0,1) as 0 class
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