MEM_loglik_no_skew {rumidas} | R Documentation |
MEM log-likelihood (no skewness parameter)
Description
Obtains the log-likelihood of the base MEM. For details, see Engle and Gallo (2006).
Usage
MEM_loglik_no_skew(param, x)
Arguments
param |
Vector of starting values. |
x |
Dependent variable, usually the realized volatility. It must be positive and "xts" object. |
Value
The resulting vector is the log-likelihood value for each i,t
.
References
Engle RF, Gallo GM (2006). “A Multiple Indicators Model for Volatility Using Intra-Daily Data.” Journal of Econometrics, 131, 3–27. doi:10.1016/j.jeconom.2005.01.018.
Examples
start_val<-c(alpha=0.10,beta=0.8)
real<-(rv5['/2010'])^0.5 # realized volatility
sum(MEM_loglik_no_skew(start_val,real))
[Package rumidas version 0.1.3 Index]