Invert MinMaxScaler from scikit_learn

Question

To feed my generative neural net, I need to normalize some data between -1 and 1.

I do it with MinMaxScaler from Sklearn and it works great. Now, my generat

Answer 1

Let us start by defining a pandas dataframe:

cols = ['A', 'B']
data = pd.DataFrame(np.array([[2,3],[1.02,1.2],[0.5,0.3]]),columns=cols)

The we scale the data using the MinMaxScaler

scaler = preprocessing.MinMaxScaler(feature_range = (0,1))
scaled_data = scaler.fit_transform(data[cols])

Now, to invert the transformation you should call the inverse transform:

scaler.inverse_transform(scaled_data)