R: Numerical evaluation of the hessian of a function using...

.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-precicion 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 2.1 Index]