https://github.com/cran/aster
Tip revision: aa47935123bfca8a22cbc8345d658d0c1713a289 authored by Charles J. Geyer on 14 December 2023, 15:20:02 UTC
version 1.1-3
version 1.1-3
Tip revision: aa47935
famnzp.Rout.save
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>
> library(aster)
Loading required package: trust
>
> ifam <- fam.truncated.poisson(truncation = 0)
>
> # change to include all cases in case splitting
> # see ../src/astfam.c lines 338 to 373
> theta <- seq(-6, 6, 0.5)
> mu <- exp(theta)
>
> zeroth <- double(length(theta))
> first <- double(length(theta))
> second <- double(length(theta))
>
> for (i in seq(along = theta)) {
+ zeroth[i] <- famfun(ifam, 0, theta[i])
+ first[i] <- famfun(ifam, 1, theta[i])
+ second[i] <- famfun(ifam, 2, theta[i])
+ }
>
> all.equal(zeroth, log(exp(mu) - 1))
[1] TRUE
> tau <- mu / (1 - exp(- mu))
> all.equal(first, tau)
[1] TRUE
> all.equal(second, tau * (1 - tau * exp(- mu)))
[1] TRUE
>
>
> proc.time()
user system elapsed
0.248 0.012 0.250