Mlforecast + AutoDifferences + fitted=True

[GGA-PERSO]

What happened + What you expected to happen

Test of the new target transformation available in 0.11.8
AutoDifferences, AutoSeasonalDifferences, AutoSeasonalityAndDifferences

I am experimenting issue while fitting the model when fitted=True (in order to get insample forecast)

Versions / Dependencies

version 0.11.8

Reproduction script

import matplotlib.pyplot as plt
import numpy as np
import pandas as pd
from datasetsforecast.m4 import M4
from sklearn.base import BaseEstimator

from mlforecast import MLForecast
from mlforecast.target_transforms import Differences, LocalStandardScaler, AutoDifferences, AutoSeasonalDifferences, AutoSeasonalityAndDifferences

data_path = 'data'
await M4.async_download(data_path, group='Hourly')
df, *_ = M4.load(data_path, 'Hourly')
df['ds'] = df['ds'].astype('int32')
serie = df[df['unique_id'].eq('H196')]

mlfcst = MLForecast(
models=[],
freq=1,
target_transforms=[AutoDifferences(max_diffs=1)],
)
without_trend_and_seasonality = mlfcst.preprocess(serie)

mlfcst.fit(without_trend_and_seasonality.dropna(), id_col='unique_id', time_col='ds', target_col='y', fitted=True, dropna=True)

Issue Severity

Low: It annoys or frustrates me.

[helderPereira22]

I have the same issue, it would be amazing if you solve this!

[ThomasDataScienc]

Hello, it would be very nice if you could add this. For the moment we can’t use autodifference, which represent a very interesting feature. Thank you in advance.