dynare/tests/ep/ar.mod

50 lines
1015 B
Modula-2

var Efficiency, efficiency;
varexo EfficiencyInnovation;
parameters rho, effstar, sigma;
/*
** Calibration
*/
rho = 0.950;
effstar = 1.000;
sigma = 0.0001;
external_function(name=mean_preserving_spread,nargs=2);
model(use_dll);
// Eq. n°1:
efficiency = rho*efficiency(-1) + sigma*EfficiencyInnovation;
// Eq. n°2:
Efficiency = effstar*exp(efficiency-mean_preserving_spread(rho,sigma));
end;
shocks;
var EfficiencyInnovation = 1;
end;
steady_state_model;
efficiency=0;
Efficiency=effstar;
end;
steady;
options_.ep.stochastic.order = 0;
ts = extended_path([], 100, [], options_, M_, oo_);
options_.ep.stochastic.order = 1;
sts = extended_path([], 100, [], options_, M_, oo_);
// The model is backward, we do not care about future uncertainty, extended path and stochastic extended path
// should return the same results.
if max(max(abs(ts.data-sts.data)))>pi*options_.dynatol.x
disp('Stochastic Extended Path:: Something is wrong here (potential bug in extended_path.m)!!!')
end