# Nonparametric Boundary Regression

## Documentation for package ‘npbr’ version 1.8

- DESCRIPTION file.
- User guides, package vignettes and other documentation.

## Help Pages

npbr-package | Nonparametric boundary regression
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 | 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