We created a set of mappings by applying simple lexical matching to preferred names and synonyms across all 4,021,662 concepts in 140 BioPortal ontologies and 67 vocabularies in the Uniﬁed Medical Language System (UMLS). This process resulted in 4,001,775 mappings.
By analyzing these mappings, we were able to produce data on the connectivity of ontologies.
The data gathered over the set of mappings can be found here.
The data is in a .xls format spreadsheet, with several worksheets containing data. Please be sure to consult the worksheet labeled "Introduction" for explanations of the data contained in the spreadsheet.