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Orientador(es)
Resumo(s)
Time series of (small) counts are common in practice and appear in a wide variety of fields. In the last three decades, several mod-els that explicitly account for the discreteness of the data have been proposed in the literature. However, for multivariate time series of counts several difficulties arise and the literature is not
so detailed. This work considers Bivariate INteger-valued Moving Average, BINMA, models based on the binomial thinning operation. The main probabilistic and statistical properties of BINMA models are studied. Two parametric cases are analysed, one with the cross-correlation generated through a Bivariate Poisson innovation process and another with a Bivariate Negative Binomial innovation process. Moreover, parameter estimation is carried out by the Generalized Method of Moments. The performance of the model is illustrated with synthetic data as well as with real datasets.
Descrição
Palavras-chave
Bivariate discrete distributions Bivariate models Generalized method of moments Moving average Time series of counts
Contexto Educativo
Citação
Editora
Taylor & Francis