Showing 1 - 10 of 2,123
We explore a periodic analysis in the context of unobserved components time series models that decompose time series into components of interest such as trend and seasonal. Periodic time series models allow dynamic characteristics to depend on the period of the year, month, week or day. In the...
Persistent link: https://www.econbiz.de/10011342560
Structural time series models are formulated in terms of components, such as trends, seasonals and cycles, that have a direct interpretation. As well as providing a framework for time series decomposition by signal extraction, they can be used for forecasting and for ‘nowcasting’. The...
Persistent link: https://www.econbiz.de/10014023699
) nonlinearityand seasonality simultaneously. The model is termed multiplicativeseasonal SETAR (SEASETAR). It can be viewed as a special … multiplicative constraints in non-multiplicative SETARmodels.These statistics form the basis of a new seasonality-test. We …
Persistent link: https://www.econbiz.de/10011304390
demand for Tunisia, by presenting different techniques of detection of seasonality and the parametric and non …
Persistent link: https://www.econbiz.de/10009762132
integrated models and deterministic seasonality models. As well as examining how forecasts are computed in each case, the …. Section 3 discusses less traditional models, specifically nonlinear seasonal models and models for seasonality in variance …. Such nonlinear models primarily concentrate on interactions between seasonality and the business cycle, either using a …
Persistent link: https://www.econbiz.de/10014023693
values) are taken, evidence of seasonality is obtained; more specifically, deterministic seasonality is rejected in favour of …
Persistent link: https://www.econbiz.de/10014427486
Infra-monthly time series have increasingly appeared on the radar of official statistics in recent years, mostly as a consequence of a general digital transformation process and the outbreak of the COVID-19 pandemic in 2020. Many of those series are seasonal and thus in need for seasonal...
Persistent link: https://www.econbiz.de/10013336397
Unobserved components time series models decompose a time series into a trend, a season, a cycle, an irregular disturbance, and possibly other components. These models have been successfully applied to many economic time series. The standard assumption of a linear model, often appropriate after...
Persistent link: https://www.econbiz.de/10011374413
The basic structural time series model has been designed for the modelling and forecasting of seasonal economic time series. In this paper we explore a generalisation of the basic structural time series model in which the time-varying trigonometric terms associated with different seasonal...
Persistent link: https://www.econbiz.de/10011379642
. -- seasonality ; time deformation ; prediction ; time series …
Persistent link: https://www.econbiz.de/10009733809