• 155 views | 3 messages Discussion: LEAP
    Topic: Base yearSubscribe | Previous | Next
  • Wu Xiaoyang 4/6/2019

    When I choose the base year, what principles should I follow? For example, I have the historical data from 2005 to 2018, but some of them are missing before 2013, so how should I choose the base year?
  • Emily Ghosh 4/16/2019
      Best Response

    The base year is the first year that LEAP begins its calculations from. Typically, it is the first year for which you have data to put into LEAP (in your case, 2005). For example, if you choose 2005 as the base year, and are missing data for some variables before 2013, LEAP will apply the 2013 value to the missing years for those variables.

    If you are uncomfortable with this assumption and feel that that the data before 2013 is insufficient, choose the base year based on the year for which you have the most amount of available data.

    Hope this helps,
    Emily

  • Gregers Larsen 4/25/2019
      Best Response

    Maybe it would be valuable to mention that the Integrated Benefits Calculator (IBC) module only works with the base year of 2010. Maybe that's also worth taking into consideration if You are working with a national scale model.