Table 6 Vocabulary build steps required for each system

MMTx^a

Used MetamorphoSys to convert RRF to ORF and used bundled data file builder to create terminology for each corpus; this process required significant user interaction and took many hours

MGrep

Sent RRF files for both corpora to the MGrep authors and received from them a tab delimited text file that could be used with the MGrep system enriched with LVG; there is limited publicly available information about the vocabulary format required by MGrep

Concept Mapper

Wrote custom Java code to convert RRF files to an XML file formatted in the Concept Mapper valid syntax

cTAKES Dictionary Lookup Annotator

Wrote custom Java code to convert RRF files to seed a Lucene Index

cTAKES Fast Dictionary Lookup Annotator

Wrote custom Java code to convert RRF into Bar Separated Values (BSV) file that FDLA imports

NOBLE Coder^a

Directly imported RRF files