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Tagging with HMMs (4)

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On page 353, Manning and Schütze argue that “clearly marked” is inherently ambiguous for a bigram tagger, but that a trigram tagger can resolve this ambiguity.

Can you find other examples for limitations of bigram models that are trigram tagger can resolve?

Can you find examples for problems for a trigram model resolvable with 4-grams or analogously for even larger numbers of n?



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