A Relation Extraction Framework for Biomedical Text Using Hybrid Feature Set

Table 4

Output of MetaMap API to rank the noun phrases and verb phrases.

S/number	VP	UMLS concept	NP	UMLS concepts
1	Experience cover place too	Meta mapping (775): 812 experiences [Mental Process]; 812 experiences (practical experience) [Mental Process]; 812 covers (cover, action) [Functional Concept]; 812 covers (covers) [Medical Device]; 812 covers (cover device component) [Medical Device]; 812 places [spatial concept]; 812 places (place, dosing instruction imperative) [Functional Concept]; 812 places (put, instruction imperative) [Activity]	The abdomen diagnostic peritoneal lavage 4 g/p and amp	Meta mapping (599): 626 abdomens [Body Location or Region]; 626 abdomens (abdominal cavity) [Body Location or Region]; 626 abdomens (entire abdomen) [body part, organ, or organ component]; 668 diagnostic peritoneal lavages (peritoneal lavage) [diagnostic procedure, Therapeutic or Preventive Procedure]; 626 g% (gram per deciliter) [Quantitative Concept]
2	be to compare	Meta mapping (1000): 1000 to [Qualitative Concept]; 1000 to (Togo) [Geographic Area]; 1000 to (tryptophanase) [amino acid, peptide, or protein, and enzyme]; 1000 comparisons (comparison) [Activity]	Efficacy and safety	Meta mapping (1000): 1000 efficacy concepts (effectiveness) [Qualitative Concept]; 1000 efficacy concepts (Efficacy Study) [Research Activity]; 1000 safety concepts [Human-caused Phenomenon or Process]; 1000 safety concepts (safety study) [Research Activity]