RDP 2018-08: Econometric Perspectives on Economic Measurement Equation (11)

P ^ i,j general ≡ f −1 ( 1 ∑ v U jv ∑ uv f ( p juv qualit y jv ) ) f −1 ( 1 ∑ v U iv ∑ uv f ( p iuv qualit y iv ) )