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Error using svd - Iacoviello type model
Posted:
Thu Jul 18, 2013 1:29 pmby mlkmx
I am trying to simulate Rubio's 'House rental versus Purchase: Theory and Evidence' paper. This is a Iacoviello type model but with the extension of the rental paper.
When I attempt to simulate the model, I obtain this error message:
Error using svd
Input to SVD must not contain NaN or Inf.
Error in cond (line 36)
s = svd(A);
Error in solve1 (line 120)
elseif bad_cond_flag && cond(fjac) > 1/sqrt(eps)
................
I have searched the forum for help but have not noticed anything. How can I improve on this? Thank you for reading.
Re: Error using svd - Iacoviello type model
Posted:
Thu Jul 18, 2013 2:46 pmby jpfeifer
Using the unstable version, the output is:
STEADY: The Jacobian contains Inf or NaN. The problem arises from:
STEADY: Derivative of Equation 12 with respect to Variable n_s (initial value of n_s: 0)
STEADY: Derivative of Equation 12 with respect to Variable n_b (initial value of n_b: 0)
STEADY: Derivative of Equation 16 with respect to Variable r_steady (initial value of r_steady: 0)
STEADY: The problem most often occurs, because a variable with
STEADY: exponent smaller than 1 has been initialized to 0. Taking the derivative
STEADY: and evaluating it at the steady state then results in a division by 0.
Re: Error using svd - Iacoviello type model
Posted:
Thu Jul 18, 2013 3:19 pmby mlkmx
Thank you very much for responding jpfeifer. When I re-enter the initial values as 1 for the variables in question, I continue to get this problem that I've had since the beginning:
'Impossible to find the steady state. Either the model doesn't have a steady state, there
are an infinity of steady states, or the guess values are too far from the solution'
From my model can you identify how I can fix this. I have attached a new mod file.
Really appreciate the help you've given me. Thank you
Re: Error using svd - Iacoviello type model
Posted:
Thu Jul 18, 2013 3:32 pmby jpfeifer
As always, try using pencil and paper to get betterstarting values.
Re: Error using svd - Iacoviello type model
Posted:
Thu Jul 18, 2013 3:54 pmby mlkmx
Okay i'll do that. Thank you very much again.