GETPRIOR

Get class prior probabilities of dataset

    [PRIOR,LABLIST] = GETPRIOR(A,WARNING)

Input
A	Dataset
WARNING	1: Generate warning if priors are not set and should be  computed from class frequencies (default)
WARNING	0: Suppress warning message

Output
PRIOR	Class prior probabilities
LABLIST	Label list

Description

Returns the class prior probabilities as defined in the dataset A.  In LABLIST the corresponding class labels are returned.

Note that if these are not set (A.PRIOR = []), the class frequencies  are measured and returned. Use ISEMPTY(A,'prior') to test whether  A.PRIOR = [].

If A has soft labels, these are used to estimate the class frequencies.  If A has target labels, an error is returned since in that case, no  classes are defined.

SEE DATASETS, SETPRIOR, ISEMPTY