Showing 1 - 10 of 98
Highly non-elliptical posterior distributions may occur in several econometric models, in particular, when the … indirect sampling methods in these models, one has to find a good candidate density. In a recent paper - Hoogerheide, Kaashoek … sophisticated neural network simulation techniques is explored. In all examples considered in this paper – a bimodal distribution of …
Persistent link: https://www.econbiz.de/10011374406
Adaptive Polar Sampling (APS) is proposed as a Markov chain Monte Carlomethod for Bayesian analysis of models with ill … the location and scale.Tested on a set of canonical models that feature nearnon-identifiability, strong correlation, and …
Persistent link: https://www.econbiz.de/10011302625
Adaptive Polar Sampling (APS) is proposed as a Markov chain Monte Carlo method for Bayesian analysis of models with ill … is applied to update the location and scale.<BR> Tested on a set of canonical models that feature near non …
Persistent link: https://www.econbiz.de/10005137171
Adaptive Polar Sampling (APS) is proposed as a Markov chain Monte Carlomethod for Bayesian analysis of models with ill … the location and scale.Tested on a set of canonical models that feature nearnon-identifiability, strong correlation, and …
Persistent link: https://www.econbiz.de/10011256462
This paper presents the R package AdMit which provides functions to approximate and sample from a certain target distribution given only a kernel of the target density function. The core algorithm consists in the function AdMit which fits an adaptive mixture of Student-t distributions to the...
Persistent link: https://www.econbiz.de/10011376537
An efficient and accurate approach is proposed for forecasting Value at Risk [VaR] and Expected Shortfall [ES] measures in a Bayesian framework. This consists of a new adaptive importance sampling method for Quantile Estimation via Rapid Mixture of t approximations [QERMit]. As a first step the...
Persistent link: https://www.econbiz.de/10011377096
-1414.Important choices for efficient and accurate evaluation of marginal likelihoods by means of Monte Carlo simulation methods are … presented of possible advantages and limitations of different simulation techniques; of possible choices of candidate …
Persistent link: https://www.econbiz.de/10011377602
Several Bayesian model combination schemes, including some novel approaches that simultaneously allow for parameter uncertainty, model uncertainty and robust time varying model weights, are compared in terms of forecast accuracy and economic gains using financial and macroeconomic time series....
Persistent link: https://www.econbiz.de/10011378346
Strategic choices for efficient and accurate evaluation of marginal likelihoods by means of Monte Carlo simulation … possible advantages and limitations of different simulation techniques; of possible choices of candidate distributions and …
Persistent link: https://www.econbiz.de/10011380802
indicate heavy tails. In thispaper we construct models which enable a decision-maker to analyze theimplications of such time …
Persistent link: https://www.econbiz.de/10011302131