© Scott McDonald & Karen Thierfelder
The estimation of SAMs has been undertaken using various different estimation methods. The first common method was the RAS method developed as part of the Cambridge Growth Project under the leadership of Richard Stone with inputs by Bacharach and Bates. Other methods include the Stone-Byron method and a metric develop by Gunluck-Senesen and Bates that was used by the World Input-Output Database project.
The entropy metric method made available here was primarily developed by Sherman Robinson. The precise method her was first coded by Robinson and McDonald in the mid 2000s.