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Table 1 F const score, all sentences

From: Benchmarking natural-language parsers for biological applications using dependency graphs

Parser F const
Charniak-Lease 80.2
Bikel (0.9.8) 79.4
Bikel (0.9.9c) 79.4
Charniak (Aug 05) 78.1
Collins (model 2) 77.8
Collins (model 3) 77.2
Collins (model 1) 76.4
Stanford (unlexicalised) 72.3
Stanford (lexicalised) 71.1
  1. Parser effectiveness based on comparison of constituent trees to the GENIA treebank, summed over entire corpus.