@ -224,7 +224,7 @@ Walk-forward validation is the gold standard of time series model evaluation and
```python
test_shifted = test.copy()
for t in range(1, HORIZON):
for t in range(1, HORIZON+1):
test_shifted['load+'+str(t)] = test_shifted['load'].shift(-t, freq='H')
test_shifted = test_shifted.dropna(how='any')