Second , software for utilizing this ontology already exists : MetaMap ( Aronson 2001 ) identifies concepts in free text , and SemRep ( Rindflesch and Fiszman 2003 ) extracts relations between the concepts .
effective mapping of biomedical text to the umls metathesaurus the metamap program
Alan R Aronson
First , substantial understanding of the domain has already been codified in the Unified Medical Language System ( UMLS ) ( Lindberg , Humphreys , and McCray 1993 ) . Second , software for utilizing this ontology already exists : MetaMap ( Aronson 2001 ) identifies concepts in free text , and SemRep ( Rindflesch and Fiszman 2003 ) extracts relations between the concepts . Both systems utilize and propagate semantic information from UMLS knowledge sources : the Metathesaurus , the Semantic Network , and the SPECIALIST lexicon .
Second , software for utilizing this ontology already exists : MetaMap ( @@CITATION ) identifies concepts in free text , and SemRep ( Rindflesch and Fiszman 2003 ) extracts relations between the concepts .