Both functions use continuous-time algorithms described in the
references. The models are time-dependent birth--death models as
described in Kendall (1948). Speciation (birth) and extinction (death)
- rates may be constant or vary through time according to an R function
+ rates may be constant or vary through time according to an \R function
specified by the user. In the latter case, \code{BIRTH} and/or
\code{DEATH} may be used of the primitives of \code{birth} and
\code{death} are known. In these functions time is the formal argument
Kendall, D. G. (1948) On the generalized ``birth-and-death''
process. \emph{Annals of Mathematical Statistics}, \bold{19}, 1--15.
- Paradis, E. (2010) Time-dependent speciation and extinction from
- phylogenies: a least squares approach. \emph{Evolution} (in press)
- %, \bold{59}, 1--12.
+ Paradis, E. (2011) Time-dependent speciation and extinction from
+ phylogenies: a least squares approach. \emph{Evolution}, \bold{65},
+ 661--672.
}
\author{Emmanuel Paradis}
\seealso{