Carnival is a data unification technology that aggregates and semantically enriches (encodes the meaning of) data from disparate sources into a unified property graph resource and provides tools to reason over and interact with that resource. Carnival has a robust architecture for tracking the provenance of data and providing evidence chains for conclusions or reasoning made on that data.

Inspired by Open Biological and Biomedical Ontology (OBO) Foundry ontologies, the carnival-clinical extension of the Carnival data model supports the execution of common investigatory tasks including harmonizing complex patient, specimen and healthcare information, patient cohort identification, case-control matching, and the production of data sets for scientific analysis.


Heather Williams, M.S.
D102 Richards Building, 3700 Hamilton Walk, Philadelphia, PA 19104-6116
email: hwilli at