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This article proposes a multivariate model of inflation with conditionally heteroskedastic common and country-specific components. The model is estimated in one-step via Quasi-Maximum Likelihood for the G7 countries for the period Q1-1960 to Q4-2009. It is found that various model specifications...
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In this paper we present a new three-step approach to the estimation of Generalized Orthogonal GARCH (GO-GARCH) models, as proposed by van der Weide (2002). The approach only requires (non-linear) least-squares methods in combination with univariate GARCH estimation, and as such is...
Persistent link: https://www.econbiz.de/10011349722
Assuming a normal-Wishart modelling framework we compare two methods for finding outliers in a multivariate regression (MR) system. One method is the add-1-dummy approach which needs fewer parameters and a model choice criterion while the other method estimates the outlier probability for each...
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theory. This enables checking of internal consistency and allows valid statistical inferences to be drawn based on empirical … regularity conditions, and associated asymptotic theory. Therefore, the derivation of a multivariate conditional volatility model … with exogenous variables (X) that has regularity conditions and asymptotic theory would seem to be a significant extension …
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