The Cusum of Squares Test for Variance Changes in Infinite Order Autoregressive Models

  • Park, Siyun (Department of Statistics, Seoul National University, Seoul, 151-742) ;
  • Lee, Sangyeol (Department of Statistics, Seoul National University, Seoul, 151-742) ;
  • Jongwoo Jeon (Department of Statistics, Seoul National University, Seoul, 151-742)
  • 발행 : 2000.09.01

초록

This paper considers the problem of testing a variance change in infinite order autoregressive models. A cusum of squares test based on the residuals from an AR(q) model is constructed analogous to Inclan and Tiao (1994)'s test statistic, where q is a sequence of positive integers diverging to $\infty$. It is shown that under regularity conditions the limiting distribution of the test statistic is the sup of a standard Brownian bridge. Simulation results are given to illustrate the performance of the test.

키워드

참고문헌

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