Hierarchy Services

The hierarchy services provide information about ontology, such as is_a transitive closure, precomputed by NCBO. The hierarchy services information is based on the <SubClass> & <SuperClass>. Those relations most of the time represent is_a hierarchies.

There are 3 major hierarchy services. All of them takes as argument:

• An ontology version id or an ontology virtual id (In that second case, the latest version of the ontology is used).
• A conceptId
• Optional arguments:
  • level=<integer> - limits results to a given level in the hierarchy
  • offset=<integer> – results offset (used for pagination)
  • limit=<integer> – limits the number of results

Parent & Children services

• Signature: ./concepts/parents/{ontlogyVersionId}/{conceptId}[?{optional args}]
• Example: http://rest.bioontology.org/bioportal/concepts/parents/13578/Melanoma