59 lines
1.9 KiB
Modula-2
59 lines
1.9 KiB
Modula-2
/* Tests the correctness of the Ramsey command when used together with a steady state file by
|
|
* checking whether the results coincide with the ones when used with an initval block
|
|
*
|
|
* The example is taken from Juillard, Michel (2011): User manual for optimal policy package,
|
|
* MONFISPOL FP7 project SSH-225149, Deliverable 1.1.2
|
|
*/
|
|
|
|
var pai, c, n, r, a;
|
|
varexo u;
|
|
parameters beta, rho, epsilon, omega, phi, gamma;
|
|
|
|
beta=0.99;
|
|
gamma=3;
|
|
omega=17;
|
|
epsilon=8;
|
|
phi=1;
|
|
rho=0.95;
|
|
|
|
model;
|
|
a = rho*a(-1)+u;
|
|
1/c = beta*r/(c(+1)*pai(+1));
|
|
pai*(pai-1)/c = beta*pai(+1)*(pai(+1)-1)/c(+1)+epsilon*phi*n^(gamma+1)/omega -exp(a)*n*(epsilon-1)/(omega*c);
|
|
exp(a)*n = c+(omega/2)*(pai-1)^2;
|
|
end;
|
|
|
|
initval;
|
|
r=1;
|
|
end;
|
|
|
|
steady_state_model;
|
|
a = 0;
|
|
pai = beta*r;
|
|
c = find_c(0.96,pai,beta,epsilon,phi,gamma,omega);
|
|
n = c+(omega/2)*(pai-1)^2;
|
|
end;
|
|
|
|
shocks;
|
|
var u; stderr 0.008;
|
|
end;
|
|
|
|
planner_objective(ln(c)-phi*((n^(1+gamma))/(1+gamma)));
|
|
ramsey_model(planner_discount=0.99,instruments=(r));
|
|
steady;
|
|
stoch_simul(order=1, nograph);
|
|
evaluate_planner_objective;
|
|
|
|
benchmark=load('ramsey_ex_initval/Output/ramsey_ex_initval_results.mat');
|
|
|
|
if any( [ max(abs((benchmark.oo_.steady_state-oo_.steady_state)))>1e-5, ...
|
|
max(abs(benchmark.oo_.dr.ys-oo_.dr.ys))>1e-5, ...
|
|
max(max(abs(benchmark.oo_.dr.ghx-oo_.dr.ghx)))>1e-5, ...
|
|
max(max(abs(benchmark.oo_.dr.ghu-oo_.dr.ghu)))>1e-5, ...
|
|
max(max(abs(benchmark.oo_.dr.Gy-oo_.dr.Gy)))>1e-5, ...
|
|
abs(benchmark.oo_.planner_objective_value.unconditional-oo_.planner_objective_value.unconditional)>1e-5, ...
|
|
abs(benchmark.oo_.planner_objective_value.conditional.zero_initial_multiplier-oo_.planner_objective_value.conditional.zero_initial_multiplier)>1e-5, ...
|
|
abs(benchmark.oo_.planner_objective_value.conditional.steady_initial_multiplier-oo_.planner_objective_value.conditional.steady_initial_multiplier)>1e-5] )
|
|
error('Initval and steady state file yield different results')
|
|
end
|