Social and Behavioral Sciences Commons^™

Testing Structural Change In Time-Series Nonparametric Regression Models, Liangjun Su, Zhijie Xiao

Research Collection School Of Economics

We propose a CUSUM type of test for structural change in dynamic nonparametric regression models. It is based upon the cumulative sums of weighted residuals from a single nonparametric regression and complements the conventional parameter instability tests in parametric models. We derive the limiting distributions of the test under both the null hypothesis and sequences of local alternatives. A boot-strap procedure is also proposed and its validity is justified. Finally, simulation experiments are conducted to investigate the finite sample properties of our test.