Can we use .fit_transform() directly?

Question

from sklearn.preprocessing import MinMaxScaler()
scaler = MinMaxScaler()

can I directly do:

scaled_data = scaler.fit_transform(mymatrix)

without doing scaler.fit(mymatrix) first?

If not, why so? What is the difference? Doesnt scaler.fit_transform() function already compute the variance and mean values too before transforming?

Answer 1

正如您在此处的文档中所见，您可以，因为fit_transform首先执行fit(),然后再应用transform() 。