© 1987 by Biometrika Trust
Robust and consistent estimates of autoregressive-moving average parameters
Dipartimento di Scienze Statistiche, Università di Padova 35121 Padova, Italy
We aim at estimates of autoregressive-moving average parameters which are simultaneously consistent at the nominal Gaussian model and insensitive to outliers in the data. The estimates may be viewed as a robust version of maximum likelihood estimates of order r and, for purely autoregressive models, reduce to a special case of generalized M-estimates.
Key Words: Autoregressive-moving average model Generalized M-estimate Maximum likelihood estimation of order r Robust estimation