Noun Group Chunker


action name
 chunk
resources required
 chunk model (max ent probabilities)
properties
 Chunker.fileName
annotations required
 token
tagger
ENAMEX
annotations added
 ng

The statistical noun group chunker is an English chunker trained on the Penn TreeBank.  It identifies noun groups (consisting of a head noun and its left modifiers) and assigns an ng annotation to each noun group.  The chunker uses a maximum entropy model whose features are specific lexical tokens and their (Penn) part-of-speech, obtained from tagger annotations.  If name annotations (ENAMEX) are present, the chunker will insure that noun groups boundaries do not appear in the middle of names.