- Fecha(s): 20/11/2014
- Lugar: Seminario del Dpto de Métodos Cuantitativos para la Economía y la Empresa, Facultad de Economía y Empresa, Murcia. Se procurará retransmitirlo en directo para doctorandos/as e investigadores/as remotos/as del Programa.
- Ponente: María Angeles Carnero, Universidad de Alicante
ABSTRACT: The identification of asymmetric conditional heteroscedasticity is often based on sample cross-correlations between past and squared observations. In this paper we analyse the effects of outliers on these cross-correlations and, consequently, on the identification of asymmetric volatilities. We show that, as expected, one isolated big outlier biases the sample cross-correlations towards zero and hence could hide true leverage…
- Fecha(s): 17/10/2014
- Lugar: Seminario Mtnez Gallur, Facultad de Economía y Empresa Campus de Espinardo, Murcia. RETRANSMISIÓN EN DIRECTO
- Ponente: Enrique Sentana, CEMFI
Abstract Nowadays copulas are extensively used in economic and finance applications, with the Gaussian copula being very popular despite ruling out non-linear dependence, particularly in the lower tail. We derive computationally simple and intuitive expressions for score tests of Gaussian copulas against Generalised Hyperbolic alternatives, which include the symmetric and asymmetric Student t, and Hermite polynomial expansions. We…
- Fecha(s): 03/07/2014
- Lugar: Seminario del Departamento de Métodos Cuantitativos para la Economía y la Empresa, UMU - Retransmisión en directo
- Ponente: Lola Gadea - Universidad de Zaragoza
- Enlace: http://www.unizar.es/lgadea/index.html
Abstract: The collapse of the global economy in 2008, following the outbreak of the financial crisis, and the ensuing economic developments of the so-called Great Recession (GR), led many economists to suggest that the relative oasis in which we had lived for almost a quarter of a century, known as the Great Moderation (GM), had indeed…
