8. The computer-implemented method of claim 1 , wherein reverse engineering a set of comparative rules comprises: iteratively generating rule parameters for each comparative rule in the set of comparative rules until the rule parameters are stable.
8. The computer-implemented method of claim 1 , wherein reverse engineering a set of comparative rules comprises: iteratively generating rule parameters for each comparative rule in the set of comparative rules until the rule parameters are stable. 10. The computer-implemented method of claim 8 , wherein the comparative rule is a measured comparative rule, and wherein generating the rule parameters comprises: calculating ⁢ ⁢ γ = log ⁢ ⁢ P a - log ⁢ ⁢ P b log ⁢ ⁢ S a - log ⁢ ⁢ S b wherein, P a and P b are the two prices and S a and S b are the two sizes.