PMGA: Implement the pool monotone groups algorithm.
In Icens: NPMLE for Censored and Truncated Data

Description Usage Arguments Details Value Author(s) References See Also

For isotonization problems some increase in speed and decrease in complexity can be achieved through the use of the pool monotone groups algorithm of Y.L. Zhang and M.A. Newton (1997). It isotonizes a weighted and ordered set of values.

1	PMGA(est, ww=rep(1, length(est)))

`est`	The vector of values, in the appropriate order.
`ww`	The weight vector.

To be supplied at some later date.

An object containing the following components:

`est`	The isotonized estimates.
`ww`	The weights associated with the isotonized estimates.
`poolnum`	The number of values pooled in the current estimate.
`passes`	The number of passes which were required to isotonize the list.