KGE                     Kling-Gupta Efficiency
Kalman_smoother         Implement Kalman smoothing
LDS_BFGS                Learn LDS with L-BFGS-B
LDS_BFGS_with_update    Learn LDS with L-BFGS-B
LDS_EM                  Learn LDS model
LDS_EM_restart          Learn LDS model with multiple initial
                        conditions
LDS_GA                  Learn a linear dynamical system using Genetic
                        Algorithm.
LDS_reconstruction      Learn LDS model.
LDS_rep                 Multiple LDS replicates
Mstep                   Maximizing expected likelihood using analytical
                        solution
NPannual                Annual streamflow at Nakhon Phanom
NPpc                    Selected principal components
NSE                     Nash-Sutcliffe Efficiency
PCR_ensemble_selection
                        Select the best reconstruction
PCR_reconstruction      Principal Component Regression Reconstruction
RE                      Reduction of Error
calculate_metrics       Reconstruction metrics
call_method             Call a reconstruction method
corr                    Pearson's correlation
cvLDS                   Cross validate LDS model. This is a wrapper for
                        LDS_reconstruction
cvPCR                   Cross validation of PCR reconstruction.
exp_ci                  Exponential confidence interval
inv_boxcox              Inverse Box-Cox transform
make_Z                  Make cross-validation folds.
make_init               Make initial values for parameters.
metrics_with_transform
                        Transform the estimates before calculating
                        metrics
nRMSE                   Normalized root-mean-square error
negLogLik               Calculates the negative log-likelihood
one_LDS_rep             One LDS replicate
one_lds_cv              One cross-validation run
one_pcr_cv              One cross-validation run
penalized_likelihood    Penalized likelihood objective function
propagate               State propagation
theta                   LDS parameters
vec_to_list             Converts theta from a vector (as used in GA) to
                        list (as used in Kalman smoothing)
