def __init__(self,
	             term_ranker=AbsoluteFrequencyRanker,
	             background_frequencies=DefaultBackgroundFrequencies,
	             rerank_ranks=False):
		'''
		Parameters
		----------
		term_ranker : TermRanker, default is OncePerDocFrequencyRanker
		background_frequencies : BackgroundFrequencies
		rerank_ranks : bool, False by default
			orders scores from 0 to 1 by their dense rank
		'''
		self.term_ranker = term_ranker
		self.background_frequencies = background_frequencies
		self.rerank_ranks = rerank_ranks

		Parameters
		----------
		term_ranker : TermRanker, default is OncePerDocFrequencyRanker
		background_frequencies : BackgroundFrequencies
		rerank_ranks : bool, False by default
			orders scores from 0 to 1 by their dense rank
		
scattertext/characteristic/DenseRankCharacteristicness.py