Nonlinear Regressions with Integrated Time Series

Joon Park and Peter Phillips

No 1190, Cowles Foundation Discussion Papers from Cowles Foundation for Research in Economics, Yale University

Abstract: An asymptotic theory is developed for nonlinear regression with integrated processes. The models allow for nonlinear effects from unit root time series and therefore deal with the case of parametric nonlinear cointegration. The theory covers integrable, asymptotically homogeneous and explosive functions. Sufficient conditions for weak consistency are given and a limit distribution theory is provided. In general, the limit theory is mixed normal with mixing variates that depend on the sojourn time of the limiting Brownian motion of the integrated process. The rates of convergence depend on the properties of the nonlinear regression function, and are shown to be as slow as n^{1/4} for integrable functions, to be generally polynomial in n^{1/2} for homogeneous functions, and to be path dependent in the case of explosive functions.

Keywords: Functionals of Brownian motion; Brownian motion; integrated process; local time; mixed normal limit theory; nonlinear transformations; nonparametric density estimation; occupation time; nonlinear regression (search for similar items in EconPapers)
JEL-codes: C22 (search for similar items in EconPapers)
Pages: 63 pages
Date: 1998-08
Note: CFP 1016.
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Published in Econometrica (2001), 69(1): 117-161

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