The use of Maximum Entropy to estimate input-output coefficients from regional farm accounting data

This paper proposes the use of the Generalised Maximum Entropy (GME) method to estimate input-output coefficients, which reflect the unobserved allocation of farm input accounting costs to the various outputs produced. The GME method uses Shannon's information criterion as a basis for estimation. The performance of the GME method is compared with three other estimation techniques: Ordinary Least Squares (OLS), Bayesian estimation, and Linear Programming (LP). The various methods are applied to accounting data from a sample of beef-dairy farms in Brittany, France. The analysis shows that the GME method offers an interesting alternative to "traditional" estimation methods. In contrast with the latter, though, the GME method is suitable to handle easily the problems of singularity, constrained estimation, and zero-observations. Moreover, due to its flexibility, transparency and relative ease of implementation, the GME method is of great value to practitioners. However the sensitivity of the GME estimates with aspect to the design of the prior information set needs to be investigated further.