.hessian {flexsurv} | R Documentation |
Numerical evaluation of the hessian of a function using numDeriv::hessian
Description
We perform a quick check about the expected runtime and adjust the precision accordingly.
Usage
.hessian(f, x, seconds.warning = 60, default.r = 6, min.r = 2, ...)
Arguments
f |
function to compute Hessian for |
x |
location to evaluate Hessian at |
seconds.warning |
time threshold in seconds to trigger message and reduce the number of iterations for Richardson extrapolation of numDeriv::hessian |
default.r |
default number of iterations (high-precision recommendation of numDeriv) |
min.r |
minial number of iteration, must be at least 2, |
... |
further arguments passed to method.args of numDeriv::hessian |
[Package flexsurv version 2.3.2 Index]