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Sucessões cronológicas com valores apagados

Title
Sucessões cronológicas com valores apagados
Type
Article in International Conference Proceedings Book
Year
2001
Authors
Francisco Calheiros
(Author)
FEUP
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Rui Jorge Gonçalves
(Author)
FEUP
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Conference proceedings National
Actas do VIII Congresso Anual da SPE
Peniche , 4 a 7 de Outubro de 2000
Scientific classification
CORDIS: Physical sciences > Mathematics > Statistics ; Physical sciences > Mathematics > Applied mathematics
Other information
Resumo (PT): Sucessões cronológicas com valores apagados são comuns na natureza, da geologia das rochas sedimentares à genética. O apagamento pode ser devido por exemplo a erosão, justapondo-se os termos (e não ficando por isso sequer marca desse tempo) ou à substituição de alguns termos por outros termos com ou sem sentido. Estudam-se sucessões AR(p) e sucessões determinísticas cíclicas com termos apagados aleatoriamente, e com termos apagados de forma determinística (inclui as discretizações). Analisam-se os momentos e a sua distribuição amostral.
Abstract (EN): Time series with deleted values are common in nature sciences such as geology or genetics. Deletion can be due to some erosion process. The observed time series is a subsequence of the original, with or without information about the deleted or modified values. Random and deterministic deletion in gaussian AR(p) and purely cyclic processes are analyzed.
Language: Portuguese
Type (Professor's evaluation): Scientific
Contact: rjasg@fe.up.pt
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