Bisquare {qrmix} | R Documentation |
Tukey's Bisquare Loss
Description
"Bisquare"
evaluates Tukey's Bisquare function defined as
f(r) = \left\{
\begin{array}{ll}
1-(1-(\frac{r}{c})^2)^3) & |r| \le c \\
1 & |r| > c
\end{array}
\right.
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)
[Package qrmix version 0.9.0 Index]