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. Author manuscript; available in PMC: 2012 Jul 1.
Published in final edited form as: Artif Intell Med. 2011 Jun 8;52(3):141–151. doi: 10.1016/j.artmed.2011.05.003

Table 4.

Comparison of recommended versus actual semantic type assignments

Semantic Type Our Recommendation (# concepts) UMLS 2009AA (# concepts)
Organic Chemical 81 74
Nucleic Acid, Nucleoside, or Nucleotide 21 21
Organophosphorous Compound 12 11
Amino Acid, Peptide, or Protein 72 65
Carbohydrate 27 48
Lipid 29 25
Steroid 11 10
Eicosanoid 1 0