Calculate MAPE and RMSE for one-week-ahead S02 forecasting using LSTM

[antonroman]

Use aggregated S02 files to forecast the load one-week ahead and calculate MAPE and RMSE for the different levels of aggregation.
Firstly univariate just using the previous load, and then using also temperature.

[antonroman]

Use 75% training, 25% validation. Use different periods 2, 4, 6, 8, 10, 12 months.