Showing 1 - 10 of 34,803
boosting selects influential terms. Markov chain Monte Carlo (MCMC) simulation estimates the final model to provide credible … inference of effects, scores and predictions. The selection of terms and MCMC simulation are applied for data of the year 2016 …
Persistent link: https://www.econbiz.de/10011875788
, which is estimated by Markov chain Monte Carlo (MCMC) simulation. Gradient boosting with stability selection serves as a …
Persistent link: https://www.econbiz.de/10011930733
, which is estimated by Markov chain Monte Carlo (MCMC) simulation. Gradient boosting with stability selection serves as a …
Persistent link: https://www.econbiz.de/10011762424
methods, which provide mixing over both the location and scale of the normal components. MCMC methods are introduced for …
Persistent link: https://www.econbiz.de/10010292242
In this paper, we extend the parametric, asymmetric, stochastic volatility model (ASV), where returns are correlated with volatility, by flexibly modeling the bivariate distribution of the return and volatility innovations nonparametrically. Its novelty is in modeling the joint, conditional,...
Persistent link: https://www.econbiz.de/10010292350
Understanding how defaults correlate across firms is a persistent concern in risk management. In this paper, we apply covariate-dependent copula models to assess the dynamic nature of credit risk dependence, which we define as "credit risk clustering". We also study the driving forces of the...
Persistent link: https://www.econbiz.de/10012657552
This paper develops a Bayesian quantile regression model with time-varying parameters (TVPs) for forecasting in ation risks. The proposed parametric methodology bridges the empirically established benefits of TVP regressions for forecasting in ation with the ability of quantile regression to...
Persistent link: https://www.econbiz.de/10012661628
With the aim of constructing predictive distributions for daily returns, we introduce a new Markov normal mixture model in which the components are themselves normal mixtures. We derive the restrictions on the autocovariances and linear representation of integer powers of the time series in...
Persistent link: https://www.econbiz.de/10011604877
In this article the theoretical analysis and practical application of Bayesian approach for vector autoregressive model parameters estimation with different priors have been peformed. The time series was from 2001Q1 to 2010Q4 and included the following variables: GDP, CPI, exchange rate,...
Persistent link: https://www.econbiz.de/10011259746
Dramatic changes in macroeconomic time series volatility pose a challenge to contemporary vector autoregressive (VAR) forecasting models. Traditionally, the conditional volatility of such models had been assumed constant over time or allowed for breaks across long time periods. More recent work,...
Persistent link: https://www.econbiz.de/10011260282