Prepositional Phrase Attachment Ambiguity Resolution
- One of the big problems of NL is that it's ambiguous.
- There's lexical ambiguity, conjunctive ambiguity and PP attachment
ambiguity.
- For example, I saw the girl with the telescope.
- Somehow the system has to figure out if the telescope belongs
to the girl or to me.
- This is a canonical example and is truly ambiguous, but it
happens all the time.
- It requires some degree of understanding of semantics (meaning).
- The best text engineering systems get it right a bit less than
90% of the time.
- Kailash Nadh and I have the best published model using
semantic lattices getting 88.1%.
- We've got a new CA based model getting 88.33%
- Note, it's a sparse problem. You are likely to encounter a PP attachment
ambiguity today that you've never seen, in fact most of the ambiguities
you see will probably be novel.
