Dans cette étude, portant sur l’analyse chronologique des ventes, nous posons le problème de l’existence probable d’une saisonnalité mixte additive et multiplicative. Dans ce contexte, nous montrons par des simulations que la désaisonnalisation selon un schéma additif pur ou un...

Three processes reflecting persistence of volatility are initially formulated by evaluating three Lévy processes at a time change given by the integral of a mean-reverting square root process. The model for the mean-reverting time change is then generalized to include non-Gaussian models that...

This paper explores the forecasting abilities of Markov-Switching models. Although MS models generally display a superior in-sample fit relative to linear models, the gain in prediction remains small. We confirm this result using simulated data for a wide range of specifications. In order to...

Asymmetric volatility in equity markets has been widely documented in finance, where two competing explanations, as considered in Bekaert and Wu (2000), are the financial leverage and the volatility feedback hypothesis. We explicitly test for the role of both hypotheses in explaining extreme...

The estimation of the jump component in asset pricing has witnessed a considerably growing body of literature. Of particular interest is the decomposition of total volatility between its continuous and jump components. Recent contributions highlight the importance of the jump component in...

This paper evaluates the convergence of energy intensities for a group of 97 countries in the period 1971–2003. Convergence is tested using a recent method proposed by Pesaran (2007) [Pesaran, M.H., 2007. A pair-wise approach to testing for output and growth convergence. Journal of...

This article proposes an econometric analysis of the demand for mobility in the aviation sector. The role played by different variables (GDP, jet-fuel prices, exogenous shocks, market maturity) on air traffic is estimated using dynamic panel-data modeling. GDP appears to have a positive...