llikNbinom {rxode2} | R Documentation |
Calculate the log likelihood of the negative binomial function (and its derivatives)
Description
Calculate the log likelihood of the negative binomial function (and its derivatives)
Usage
llikNbinom(x, size, prob, full = FALSE)
Arguments
x |
Number of successes |
size |
Size of trial |
prob |
probability of success |
full |
Add the data frame showing x, mean, sd as well as the fx and derivatives |
Details
In an rxode2()
model, you can use llikNbinom()
but you have to
use all arguments. You can also get the derivative of prob
with
llikNbinomDprob()
Value
data frame with fx
for the pdf value of with
dProb
that has the derivatives with respect to the parameters at
the observation time-point
Author(s)
Matthew L. Fidler
Examples
llikNbinom(46:54, 100, 0.5)
llikNbinom(46:54, 100, 0.5, TRUE)
# In rxode2 you can use:
et <- et(46:54)
et$size <- 100
et$prob <-0.5
model <- function() {
model({
fx <- llikNbinom(time, size, prob)
dProb <- llikNbinomDprob(time, size, prob)
})
}
rxSolve(model, et)
[Package rxode2 version 2.1.3 Index]