A Practical Approach to Timeseries Forecasting Using Python - Data Splitting

What is the purpose of splitting the data in time series forecasting?

What are the two dictionaries mentioned in the text, and what are their purposes?

What is the significance of the split date in the data splitting process?

How do you determine which data goes into the training set and which goes into the testing set?

Why is it important to perform data splitting before time series forecasting?