Scalar which contains the required efficiency (of location
or scale estimator).
Generally eff=0.85, 0.9 or 0.95
Data Types: single|double
e.g. in regression v=1
Data Types: single|double|int32|int64
The asymptotic rejection probability of an estimator is
defined as the probability in large sample under a
reference distribution that a Malanobis distance excees
$c_0$, where $c_0=inf \{ u_0 | w(u)=0, \forall u>u_0 \}$.
$w(u)$ is the weight function (defined in RKwei.m). In
other words, given $c_0=sup(\rho(u))$,if an estimator is normed
to the normal distribution ARP is $1-F_{\chi^2_v}(c_0^2)$.
The default value of ARP is 0.05.
Example: 0.04
Data Types: double