Quantitative properties of sovereign default models: solution methods
AbstractWe study the sovereign default model that has been used to account for the cyclical behavior of interest rates in emerging market economies. This model is often solved using the discrete state space technique with evenly spaced grid points. We show that this method necessitates a large number of grid points to avoid generating spurious interest rate movements. This makes the discrete state technique significantly more inefficient than using Chebyshev polynomials or cubic spline interpolation to approximate the value functions. We show that the inefficiency of the discrete state space technique is more severe for parameterizations that feature a high sensitivity of the bond price to the borrowing level for the borrowing levels that are observed more frequently in the simulations. In addition, we find that the efficiency of the discrete state space technique can be greatly improved by (i) finding the equilibrium as the limit of the equilibrium of the finite-horizon version of the model, instead of iterating separately on the value and bond price functions and (ii) concentrating grid points in asset levels at which the bond price is more sensitive to the borrowing level and in levels that are observed more often in the model simulations. Our analysis is also relevant for the study of other credit markets. (Copyright: Elsevier)
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Bibliographic InfoArticle provided by Elsevier for the Society for Economic Dynamics in its journal Review of Economic Dynamics.
Volume (Year): 13 (2010)
Issue (Month): 4 (October)
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Other versions of this item:
- Juan Carlos Hatchondo & Leonardo Martinez & Horacio Sapriza, 2010. "Code and data files for "Quantitative properties of sovereign default models: solution methods matter"," Computer Codes 08-133, Review of Economic Dynamics.
- Juan Carlos Hatchondo & Leonardo Martinez & Horacio Sapriza, 2010. "Online Appendix to "Quantitative properties of sovereign default models: solution methods"," Technical Appendices, Review of Economic Dynamics 08-133, Review of Economic Dynamics.
- F34 - International Economics - - International Finance - - - International Lending and Debt Problems
- F41 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Open Economy Macroeconomics
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