featuretools.EntitySet.add_last_time_indexes¶
- EntitySet.add_last_time_indexes(updated_dataframes=None)[source]¶
Calculates the last time index values for each dataframe (the last time an instance or children of that instance were observed). Used when calculating features using training windows. Adds the last time index as a series named _ft_last_time on the dataframe.
- Parameters
updated_dataframes (list[str]) – List of dataframe names to update last_time_index for (will update all parents of those dataframes as well)