This example dataset goes from January 31st 2017 to March 11th 2017. Despite being from the past, we can contrive a scenario in which we are pretending to be in that time frame and say that today's date is March 1st, 2017. We therefore want to have an ML job analyze the data between January 31st and today, and then use ML to forecast that data ten days into the future.
We can then have the ML job analyze the rest of the data in the index (from March 1st through March 11th) and we can ...