NEWS:
This track consists of finding alignments between the Foundational Model of Anatomy (FMA), SNOMED CT, and the National Cancer Institute Thesaurus (NCI). These ontologies are semantically rich and contain tens of thousands of classes.
UMLS Metathesaurus has been selected as the basis for the track reference alignments. UMLS is currently the most comprehensive effort for integrating independently-developed medical thesauri and ontologies, including FMA, SNOMED CT, and NCI.
The generated system alignment should be an optimal solution to the matching problem with respect to both recall and precision with respect to the UMLS-based reference alignment.
The complete datasets for the OAEI 2021 campaign can be downloaded as a zip file (LargeBioMed_dataset_oaei.zip [17Mb]).
Since 2014, instead of repairing the original UMLS reference alignments by removing mappings leading to unsatisfiable classes, we flagged the incoherence-causing mappings in the alignment by setting the relation to "?" (unknown). These "?" mappings will neither be considered as positive nor as negative when evaluating the participating ontology matching systems, but will simply be ignored. This way, systems that do not perform mapping repair are not penalized for finding mappings that (despite causing incoherences) may or may not be correct, and systems that do perform mapping repair are not penalized for removing such mappings either.
Nevertheless, we will still give a special attention to the number of unsatisfiabilities caused by the mappings computed by a participating system. Thus, we encourage system developers to implement mapping repair techniques or reuse state-of-the art techniques.
Regarding the use of background knowledge, the OAEI rules state that a resource (i.e. a third biomedical ontology) especially designed for the test is not allowed. Particularly, matching systems using the UMLS Metathesaurus as background knowledge will have a notable advantage since the reference alignment is also based on the UMLS Metathesaurus.
The evaluation of the Large BioMed Track will be run with support of the MELT framework. This requires that you wrap your matching system in a way that allows us to execute it using MELT (see OAEI 2021 evaluation details).
The phenotype track is a built-in track within the MELT framework. It can also be accessed via the MELT client (see dataset identifiers below).
This task consists of matching two (relatively) small fragments of FMA and NCI. The FMA fragment contains 3,696 classes (5% of FMA), while the NCI fragment contains 6,488 classes (10% of NCI).
This task consists of matching the whole FMA and NCI ontologies, which contains 78,989 and 66,724 classes, respectively.
This task consists of matching two (relatively) small fragments of FMA and SNOMED. The FMA fragment contains 10,157 classes (13% of FMA), while the SNOMED fragment contains 13,412 classes (5% of SNOMED).
This task consists of matching the whole FMA that contains 78,989 classes with a large SNOMED fragment that contains 122,464 classes (40% of SNOMED).
This task consists of matching two (relatively) small fragments of SNOMED and NCI. The SNOMED fragment contains 51,128 classes (17% of SNOMED), while the NCI fragment contains 23,958 classes (36% of NCI).
This task consists of matching the whole NCI that contains 66,724 classes with a large SNOMED fragment that contains 122,464 classes (40% of SNOMED).