(in Applications)
Testing a Nonlinear Regression Specification: A Nonregular Case
A. Ronald Gallant
Journal of the American Statistical Association,
Vol. 72, No. 359. (Sep., 1977), pp. 523-530.
Abstract
A statistical test of whether an additive nonlinear term in the
response function should be omitted from a nonlinear regression
specification is considered. The regularity conditions used to obtain
the asymptotic distributions of the customary test statistics are
violated when the null hypothesis of omission is true. Moreover,
standard iterative algorithms are likely to perform poorly when the
data support the null hypothesis. Methods designed to circumvent these
mathematical and computational difficulties are described and
illustrated.
Keywords: Nonlinear regression, Hypothesis testing,
Segmented regression