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Coherency Conditions in Simultaneous Linear Equation Models with Endogenous Switching Regimes

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  • Gourieroux, C
  • Laffont, J J
  • Monfort, A

Abstract

In modeling disequilibrium macroeconomic systems which one would want to subject to econometric estimation one typically faces the problem of whether the structural model can determine a unique equilibrium. The problem inherits a special form because the regimes in which the equilibria can lie are each linear. By placing restrictions on the parameters that insure the uniqueness of such a solution for each value of the exogenous and random variables, we can improve the estimation procedure. This paper provides necessary and sufficient conditions for uniqueness -- or "coherency." These conditions are applied to a variety of models that have been prominent in the literature on econometrics with 'switching regimes' such as those of self-selectivity (Maddala), simultaneous equation tobit and probit (Amemiya, Schmidt) and multi-market macroeconomic disequilibrium (Gourieroux, Laffont and Nonfort).
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  • Gourieroux, C & Laffont, J J & Monfort, A, 1980. "Coherency Conditions in Simultaneous Linear Equation Models with Endogenous Switching Regimes," Econometrica, Econometric Society, vol. 48(3), pages 675-695, April.
  • Handle: RePEc:ecm:emetrp:v:48:y:1980:i:3:p:675-95
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    1. Martin, Christopher & Portes, Richard, 1990. " Effective Demand and Spillovers," Scandinavian Journal of Economics, Wiley Blackwell, vol. 92(1), pages 109-120.
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