Evaluate the score function at a given point.
The score corresponds to the profile (concentrated)
log-likelihood in which the scale parameter has been profiled
out.
- Parameters:
- paramsnumpy:array_like
The parameter vector at which the score function is
computed.
- scale
float
or None
If None, return the profile (concentrated) log likelihood
(profiled over the scale parameter), else return the
log-likelihood using the given scale value.
- Returns:
ndarray
The score vector.