A column-vector y was passed when a 1d array was expected
Change this line:
model = forest.fit(train_fold, train_y)to:
model = forest.fit(train_fold, train_y.values.ravel())Edit:
.values will give the values in an array. (shape: (n,1)
.ravel will convert that array shape to (n, )
I also encountered this situation when I was trying to train a KNN classifier. but it seems that the warning was gone after I changed:knn.fit(X_train,y_train)
toknn.fit(X_train, np.ravel(y_train,order='C'))
Ahead of this line I used import numpy as np.
I had the same problem. The problem was that the labels were in a column format while it expected it in a row.use np.ravel()
knn.score(training_set, np.ravel(training_labels))Hope this solves it.