Nonparametric Boundary Regression

A variety of functions for the best known and most innovative approaches to nonparametric boundary estimation. The selected methods are concerned with empirical, smoothed, unrestricted as well as constrained fits under both separate and multiple shape constraints. They cover robust approaches to outliers as well as data envelopment techniques based on piecewise polynomials, splines, local linear fitting, extreme values and kernel smoothing. The package also seamlessly allows for Monte Carlo comparisons among these different estimation methods. Its use is illustrated via a number of empirical applications and simulated examples.


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install.packages("npbr")

1.6 by Thibault Laurent, 3 years ago


Browse source code at https://github.com/cran/npbr


Authors: Abdelaati Daouia <[email protected]> , Thibault Laurent <[email protected]> , Hohsuk Noh <[email protected]>


Documentation:   PDF Manual  


GPL (>= 2) license


Imports Benchmarking, np, quadprog, Rglpk, splines

Depends on graphics, stats, utils


See at CRAN