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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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number
0343.
Length: Date of creation: May 1979 Date of revision: Handle: RePEc:nbr:nberwo:0343
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Marie-Claire Villeval & Bernard Fortin & Guy Lacroix, 2005.
"Tax Evasion and Social Interactions,"
Working Papers
0410, Groupe d'Analyse et de Théorie Economique (GATE), Centre national de la recherche scientifique (CNRS), Université Lyon 2, Ecole Normale Supérieure.
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Patrick K. Asea & S. Brock Blomberg, 1997.
"Lending Cycles,"
NBER Working Papers
5951, National Bureau of Economic Research, Inc.
[Downloadable!] (restricted)
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