Increment new data in decision tree

flaviorrrl

I have three csv files with different years (2001, 2005, 2009), in relation to the consumption of electric energy in the USA.

I've managed to create the ranking model of the year in 2001, but now wished to update the model incrementing data from 2005. I would like to update the model with incremental data.

someone knows how to do this?

Thanks in advance for your support

Regards,
flaviorrl