llikGeom function

log likelihood and derivatives for Geom distribution

llikGeom(x, prob, full = FALSE)

Arguments

• x: variable distributed by a geom distribution
• prob: probability of success in each trial. 0 < prob <= 1.
• full: Add the data frame showing x, mean, sd as well as the fx and derivatives

Returns

data frame with fx for the log pdf value of with dProb

that has the derivatives with respect to the prob parameters at the observation time-point

Details

In an rxode2() model, you can use llikGeom() but you have to use the x and rate arguments. You can also get the derivative of prob with llikGeomDprob().

Examples

llikGeom(1:10, 0.2)

et  <- et(1:10)
et$prob <- 0.2
 
model <- function() {
  model({
    fx <- llikGeom(time, prob)
    dProb <- llikGeomDprob(time, prob)
  })
}

rxSolve(model, et)

Author(s)

Matthew L. Fidler