A multistage deflation algorithm for blind source separation based on order statistics
María Yolanda Blanco Archilla, Santiago Zazo Bello, José Manuel Páez Borrallo · 1999
this paper (see (7)). The cdf at the outputs is unknown and therefore it's needed to estimate it (or several values of it); it's well known that the Order Statistics are estimators of the quantiles of the cdf; However let's remark: let w (1) <w (2) <....w (n) the ordered form , then w F w k n k w k ( ) ( )) / $ ( ) / = . (9) where k is the position in the ordered form, by other side the value w (k) is the k-Order Statistic which estimates the k.100/n quantile . k n w (k) x (k) O.S