Hi Deepal, Within the dictionary lookup component, you can also plugin other custom dictionaries in additional to the UMLS ones. The dictionary itself can be in different formats (MySQL, HSQLDB, Lucene, CSV text file) and could be configured via the xml files. Is this what you were referring to? Do you have an example of "mapping terms to the corresponding classes?" Just curious, Is the heart ontology a subset of UMLS?
Thanks, --Pei > -----Original Message----- > From: Deepal Dhariwal [mailto:[email protected]] > Sent: Thursday, December 27, 2012 12:17 AM > To: [email protected]; [email protected] > Subject: Information Extraction using ontology > > Hello all, > > I have a heart ontology and I want to extract terms from a clinical text that > correspond to classes in the ontology. cTAKES UMLS Lookup Annotator > returns UMLS terms from a given piece of text. Could I modify the annotator > to extract terms from the ontology and is there is some other component of > cTAKES that would allow me to do so. I am trying to set up a cTakes pipeline > where I first extract medical terms from text using UMLS lookup then filter > cardio vascular terms and identify relations between them using an ontology. > > Thanks > Deepal Dhariwal
