G22.2590 - Natural Language Processing -- Spring 2003 -- Prof. Grishman

Assignment #6

February 27th, 2003
  1. Try the noun group / verb group patterns on three sentences from a newspaper. How many groups did it get right?  How many did it miss?  How many wrong ones did it identify?
  2. Extend the patterns to allow perfect tenses (of the form "have" + past participle) to the verb groups. Note that this should include progressive perfect ("have been eating") and passive perfect ("has been eaten").  In adition, allow quantifiers in the noun group ("five assignments") and pre-nominal nouns ("my afternoon tea").  Retry your three sentences.
Due March 13th.

Get ChunkPatterns.txt from the Jet resources page.  The properties file and documentation on the Jet Pattern Language are available there too.  Get version 1.12 or later of Jet to do this assignment.

A properties file (chunk.properties) to run the noun/verb group chunk patterns

# JET properties file
Jet.dataPath           = C:/My Documents/nlp course/Jet
Tags.fileName          = pos_hmm.txt
Pattern.fileName1      = ChunkPatterns.txt
processSentence        = tagJet, pat(chunks)