Estimation of seasonal fractionally integrated processes

  • Authors:
  • Valderio Anselmo Reisen;Alexandre L. Rodrigues;Wilfredo Palma

  • Affiliations:
  • Department of Statistics, Universidade Federal de Espirito Santo, R. Fernando Ferrari s/n, Vitoria ES 29060900, Brazil;Department of Statistics, Universidade Federal de Espirito Santo, R. Fernando Ferrari s/n, Vitoria ES 29060900, Brazil;Department of Statistics, Pontificia Universidad Católica de Chile, Santiago, Chile

  • Venue:
  • Computational Statistics & Data Analysis
  • Year:
  • 2006

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Abstract

This paper discusses the estimation of fractionally integrated processes with seasonal components. In order to estimate the fractional parameters, we propose several estimators obtained from the regression of the log-periodogram on different bandwidths selected around and/or between the seasonal frequencies. For comparison purposes, the semi-parametric method introduced in Geweke and Porter-Hudak (1983) and Porter-Hudak (1990) and the maximum-likelihood estimates (ML) are also considered. As indicated by the Monte Carlo simulations, the performance of the estimators proposed is good even for small sample sizes.