Bisquare: Tukey's Bisquare Loss

In qrmix: Quantile Regression Mixture Models

Description

"Bisquare" evaluates Tukey's Bisquare function defined as

f(r)=1-(1-(r/c)^2)^3) if |r|<=c

f(r)=1 if |r|>c

Usage

Bisquare(r, c = 4.685)

Arguments

r	a real number or vector.
c	a positive number. If the value is negative, it's absolute value will be used.

Examples

set.seed(1)
x = rnorm(200, mean = 3)
y = Bisquare(x)
plot(x, y)

qrmix documentation built on May 2, 2019, 11:04 a.m.