Stein function

Stein loss function.

Compute the Stein loss function between the matrices S and H. See, Laurent et al. (2012).

Stein(S, H)

Arguments

• S: Proxy for the conditional covariance/correlation matrix
• H: Estimate of the conditional covariance/correlation matrix.

References

Laurent, S., Rombouts, J. V., & Violante, F. (2012). On the forecasting accuracy of multivariate GARCH models. Journal of Applied Econometrics, 27(6), 934-955.

Author(s)

Carlos Trucios

Examples

X = matrix(rnorm(4000),ncol=4)
S = diag(4)
H = cov(X)

Stein(S, H)