def drop_zero_priors(self):
		'''
		Returns
		-------
		PriorFactory
		'''
		self.term_doc_mat = self.term_doc_mat.remove_terms(
			self.priors[self.priors == 0].index
		)
		self._reindex_priors()
		return self
def drop_zero_priors ( self ) : self . term_doc_mat = self . term_doc_mat . remove_terms ( self . priors [ self . priors == 0 ] . index ) self . _reindex_priors ( ) return self
Returns
		-------
		PriorFactory