Function ukf
runs the unscented Kalman filter for the given
non-linear Gaussian model of class nlg_ssm
,
and returns the filtered estimates and one-step-ahead predictions of the
states \(\alpha_t\) given the data up to time \(t\).
ukf(object, alpha = 1, beta = 0, kappa = 2)
Model object
Tuning parameters for the UKF.
List containing the log-likelihood,
one-step-ahead predictions at
and filtered
estimates att
of states, and the corresponding variances Pt
and
Ptt
.