Showing 1 - 10 of 14
Abstract: In this paper, we review classical and advanced methodologies for analysing within-subject functional Magnetic Resonance Imaging (fMRI) data. Such data are usually acquired during sensory or cognitive experiments that aims at stimulating the subject in the scanner and eliciting evoked...
Persistent link: https://www.econbiz.de/10010707990
We proceed to an impulse response analysis on the conditional correlations between three stock indices returns: the Nikkei, the FTSE 100 and the S&P 500. As a first step, we estimate an extension of the general asymmetric dynamic conditional correlation (GADCC) model proposed by Cappiello,...
Persistent link: https://www.econbiz.de/10011072507
This paper considers Dynamic Conditional Correlations (DCC) GARCH models in which the time-varying coefficients, including the conditional correlation matrix, are functions of the realizations of an exogenous stochastic process. Time series generated by this model are in general nonstationary....
Persistent link: https://www.econbiz.de/10011073519
out on the French option market. We examine methods that account for non-normal skewness and kurtosis, relax the … normal skewness and kurtosis in terms of precision in the option valuation. …
Persistent link: https://www.econbiz.de/10010891140
This note is made of four book reviews of Brooks et al. (2011), Karian and Dudewicz (2011), McGrayne (2010), and Ziliak and Mc- Closkey (2008), respectively. They are scheduled to appear in the next issue of CHANCE.
Persistent link: https://www.econbiz.de/10010707188
statistical challenges and, in particular, recent advances in the areas of adaptive Markov chain Monte Carlo (MCMC) algorithms …
Persistent link: https://www.econbiz.de/10010707776
The Wang-Landau algorithm aims at sampling from a probability distribution, while penalizing some regions of the state space and favouring others. It is widely used, but its convergence properties are still unknown. We show that for some variations of the algorithm, the Wang-Landau algorithm...
Persistent link: https://www.econbiz.de/10011166535
(MCMC) has found many applications. This paper examines problems associated with its application to repeated evaluation of …
Persistent link: https://www.econbiz.de/10010960512
Missing variable models are typical benchmarks for new computational techniques in that the ill-posed nature of missing variable models offer a challenging testing ground for these techniques. This was the case for the EM algorithm and the Gibbs sampler, and this is also true for importance...
Persistent link: https://www.econbiz.de/10010708157
This introduction to Bayesian statistics presents the main concepts as well as the principal reasons advocated in favour of a Bayesian modelling. We cover the various approaches to prior determination as well as the basis asymptotic arguments in favour of using Bayes estimators. The testing...
Persistent link: https://www.econbiz.de/10010708281