R-estimation in autoregression with square-integrable score function

  • Authors:
  • Kanchan Mukherjee;Z. D. Bai

  • Affiliations:
  • National University of Singapore, Singapore, Republic of Singapore;National University of Singapore, Singapore, Republic of Singapore

  • Venue:
  • Journal of Multivariate Analysis
  • Year:
  • 2002

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Abstract

This paper develops an asymptotic theory for R-estimation based on a square-integrable, not necessarily bounded, score function in the pth order stationary autoregressive model. Asymptotic uniform linearity of a class of linear rank statistics is established and the asymptotic normality of the corresponding R-estimators is derived. This paper thus solves a long-standing problem in the development of the asymptotics for rank estimators under the autoregressive setup. The proofs use a combination of the approximation technique, the contiguity technique and the weak convergence technique of Hájek, Jurecková and Koul, respectively.