Even beyond top-down and shift-reduce parser NLTK also offers chart parsers that create partial hypotheses that a given sequence can be continued to fulfill a rule .

甚至，除了 top-down和shift-reduce 解析器以外，NLTK还提供了“chart解析器”，它可以创建部分假定，这样一个给定的序列就可以继而完成一个规则。