scipy.stats._result_classes.FitResult.

nllf

FitResult.nllf(params=None, data=None)

Negative log-likelihood function

Evaluates the negative of the log-likelihood function of the provided data at the provided parameters.

Parameters:

paramstuple, optional

The shape parameters, location, and (if applicable) scale of the distribution as a single tuple. Default is the maximum likelihood estimates (self.params).

dataarray_like, optional

The data for which the log-likelihood function is to be evaluated. Default is the data to which the distribution was fit.

Returns:

nllffloat

The negative of the log-likelihood function.