sBEKK_mat_est: sBEKK covariance matrix
Description
Obtains the conditional covariance matrix from the scalar BEKK model.
Usage
sBEKK_mat_est(param, ret)
Value
The resulting vector is the log-likelihood value for each \(t\).
Arguments
- param
Vector of starting values.
- ret
Txk matrix of daily returns. At the moment, k can be at most 5