O Instituto de Ciências Matemáticas e de Computação (ICMC), da USP São Carlos, promove nesta sexta-feira (25) o seminário Robust estimation in Time Series with different correlation structures and additive outliers, a ser ministrado pelo professor Valdério Anselmo Reisen, da Universidade Federal do Espírito Santo (UFES). A palestra será realizada às 14 horas, na sala 4-001 do ICMC.
Valdério Reisen Foto: Plataforma Lattes |
Segue o resumo da palestra, em inglês:
A desirable property of an autocovariance estimator is to be robust to the presence of additive outliers. It is well-known that the sample autocovariance, based on the moments, does not own this property. Hence, the definition of an autocovariance estimator which is robust to additive outlier can be very useful for time-series modelling. In this paper, some asymptotic properties of the robust scale and autocovariance estimators proposed by Ma & Genton (2000) is studied and applied to time series with different correlation structures and, also, applied to periodic processes.
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