positive score is greater than or equal to all negative scores and the threshold divided by
the number of all test items. If several positive scores for one test item exist, the **highest** score is taken.
If a particular test item has only negative scores a correct classification hit it done if all the negative scores are higher than
the **threshold**. For this particular test, the definition of threshold is mandatory.
**Parameters:**
``cmc_scores`` : CMC scores loaded with one of the functions (:py:func:`bob.measure.load.cmc_four_column` or
:py:func:`bob.measure.load.cmc_five_column`)
``cmc_scores`` : CMC scores loaded with one of the functions (:py:func:`bob.measure.load.cmc_four_column` or :py:func:`bob.measure.load.cmc_five_column`)
``threshold`` : Decision threshold. If `None`, the decision threshold will be the **highest** positive score.