air                     European air controllers
cub_spline_est          Cubic spline fitting
cub_spline_kn           AIC and BIC criteria for choosing the number of
                        inter-knot segments in cubic spline fits
dea_est                 DEA, FDH and linearized FDH estimators.
dfs_momt                Moment frontier estimator
dfs_pick                Pickands frontier estimator
dfs_pwm                 Probability-weighted moment frontier estimator
green                   American electric utility companies
kern_smooth             Frontier estimation via kernel smoothing
kern_smooth_bw          Bandwidth selection for kernel smoothing
                        frontier estimators
kopt_momt_pick          Optimal k in moment and Pickands frontier
                        estimators
loc_est                 Local linear frontier estimator
loc_est_bw              Bandwidth selection for the local linear
                        frontier estimator
loc_max                 Local maximum frontier estimators
mopt_pwm                Threshold selection for the PWM frontier
                        estimator
npbr-package            Nonparametric boundary regression
nuclear                 Reliability programs of nuclear reactors
pick_est                Local Pickands' frontier estimator
poly_degree             AIC and BIC criteria for choosing the optimal
                        degree of the polynomial frontier estimator
poly_est                Polynomial frontier estimators
post                    European postal services
quad_spline_est         Quadratic spline frontiers
quad_spline_kn          AIC and BIC criteria for choosing the optimal
                        number of inter-knot segments in quadratic
                        spline fits
records                 Annual sport records
rho_momt_pick           Optimal rho for moment and Pickands frontier
                        estimator
rho_pwm                 Probability-weighted moment frontier estimator
