Table 4.

Caramba: best groups of patterns at first iteration (training set).

P	R	F	Description
0.7322	0.6452	0.6859	B: Brown Beth_Partners unigrams
0.6949	0.5407	0.6082	Brown UMLS unigrams
0.5239	0.3475	0.4179	B: UMLS first or two Semantic Types
0.4307	0.2908	0.3472	Charniak-McClosky POS unigrams, bigrams, trigrams
0.5209	0.2551	0.3425	Wmatch only
0.5137	0.2564	0.3421	Wmatch only, BIO
0.3378	0.1476	0.2055	B: Charniak-McClosky chunk unigrams, bigrams, trigrams
0.3378	0.0478	0.0837	B: alphabetic or case unigrams
0.7469	0.6809	0.7124	Subset 1: All of the above

Note: B: bigram of classes.