graph_score_vectorizer.py 文件源码

def __init__(self, method='degree', analyzer=NltkNormalizer().split_and_normalize):
        self.analyze = analyzer
        self.method = method
        self.methods_on_digraph = {'hits', 'pagerank', 'katz'}
        self._get_scores = {'degree': nx.degree, 'betweenness': nx.betweenness_centrality,
                            'pagerank': nx.pagerank_scipy, 'hits': self._hits, 'closeness': nx.closeness_centrality,
                            'katz': nx.katz_centrality}[method]
        # Add a new value when a new vocabulary item is seen
        self.vocabulary = defaultdict()
        self.vocabulary.default_factory = self.vocabulary.__len__