ShapeChange-package {ShapeChange} | R Documentation |
Change-Point Estimation using Shape-Restricted Splines
Description
Given a scatterplot of (x_i, y_i)
, i = 1,\ldots,n
, where \bold{x}
is the predictor and \bold{y}
is the response which could be Gaussian, Poisson and binomial. The underlying mean curve in this scatterplot is denoted as \bold{f_m(x)}
, where \bold{f_m(x)}
is a smooth curve with a change-point m
which falls in one of the three categories:
a mode in a unimodal smooth curve
an inflection point in a convex-concave (concave-convex) smooth curve
a jump point in an otherwise smooth curve.
Given the category of the change-point specified by the user, the main routine "changept" estimates the mean curve and the change-point as well using shape-restricted B-splines.
See changept
for more details.
Details
Package: | ShapeChange |
Type: | Package |
Version: | 1.3 |
Date: | 2016-03-19 |
License: | GPL (>= 2) |
Author(s)
Xiyue Liao and Mary C. Meyer
Maintainer: Xiyue Liao <xiyue@rams.colostate.edu>