MCMC Bayesian Estimation in FIEGARCH Models

被引:3
|
作者
Prass, Taiane S. [1 ]
Lopes, Silvia R. C. [1 ]
Achcar, Jorge A. [2 ]
机构
[1] Univ Fed Rio Grande do Sul, Math Inst, Porto Alegre, RS, Brazil
[2] Univ Sao Paulo, Sch Med, Dept Social Med, Sao Paulo, SP, Brazil
关键词
Bayesian inference; FIEGARCH processes; Long-range dependence; MCMC; 62F15; 62M10; LONG-MEMORY;
D O I
10.1080/03610918.2014.932800
中图分类号
O21 [概率论与数理统计]; C8 [统计学];
学科分类号
020208 ; 070103 ; 0714 ;
摘要
Bayesian inference for fractionally integrated exponential generalized autoregressive conditional heteroscedastic (FIEGARCH) models using Markov chain Monte Carlo (MCMC) methods is described. A simulation study is presented to assess the performance of the procedure, under the presence of long-memory in the volatility. Samples from FIEGARCH processes are obtained upon considering the generalized error distribution (GED) for the innovation process. Different values for the tail-thickness parameter are considered covering both scenarios, innovation processes with lighter ( > 2) and heavier ( < 2) tails than the Gaussian distribution ( = 2). A comparison between the performance of quasi-maximum likelihood (QML) and MCMC procedures is also discussed. An application of the MCMC procedure to estimate the parameters of a FIEGARCH model for the daily log-returns of the S&P500 U.S. stock market index is provided.
引用
收藏
页码:3238 / 3258
页数:21
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