This function computes the \(\alpha\)-Percentile Residual Quantile Function for quantile function \(x(F)\) (par2qua
, qlmomco
). The function is defined by Nair and Vineshkumar (2011, p. 85) and Nair et al. (2013, p. 56) as
$$P_\alpha(u) = x(1 - [1-\alpha][1-u]) - x(u)\mbox{,}$$
where \(P_\alpha(u)\) is the \(\alpha\)-percentile residual quantile for nonexceedance probability \(u\) and percentile \(\alpha\) and \(x(u)\) is a constant for \(x(F = u)\). The reversed \(\alpha\)-percentile residual quantile is available under rralmomco
.
ralmomco(f, para, alpha=0)
\(\alpha\)-percentile residual quantile value for \(F\).
Nonexceedance probability (\(0 \le F \le 1\)).
The parameters from lmom2par
or vec2par
.
The \(\alpha\) percentile, which is divided by \(100\) inside the function ahead of calling the quantile function of the distribution.
W.H. Asquith
Nair, N.U., and Vineshkumar, B., 2011, Reversed percentile residual life and related concepts: Journal of the Korean Statistical Society, v. 40, no. 1, pp. 85--92.
Nair, N.U., Sankaran, P.G., and Balakrishnan, N., 2013, Quantile-based reliability analysis: Springer, New York.
qlmomco
, rmlmomco
, rralmomco