def _extend_matrix_postprocess(self):
        """Keeps the rows of the original weak label matrix, for which at least on rule did not abstain."""
        recs_with_votes = np.argwhere((self._matrix != self._label2int[None]).sum(-1) > 0).flatten()
        self._extended_matrix[recs_with_votes] = self._matrix[recs_with_votes]
Keeps the rows of the original weak label matrix, for which at least on rule did not abstain.
argilla-v1/src/argilla_v1/labeling/text_classification/weak_labels.py