A KGX transformation of the BioPortal ontology Physician Data Query (PDQ), produced by KG‑Bioportal. Nodes are ontology classes; edges are the relations between them. The base graph is the ontology on its own, imports stripped; the full graph, where built, has the import closure merged in.
Base graph at a glance
Products & downloads
The base graph contains PDQ_nodes.tsv and PDQ_edges.tsv. The full graph contains PDQ_full_nodes.tsv and PDQ_full_edges.tsv: this ontology plus the 1 it imports (and their imports in turn), merged by ROBOT. Use it when the imported terms matter; the base graph merges more cleanly with other graphs. Releases are incremental, so each link points at whichever release most recently rebuilt this ontology.
Imports 1
- externalw3.org/2004/02/skos/core
What this ontology pulls in through owl:imports. An import that is itself a BioPortal ontology links to its page here; a module of one links to the ontology it belongs to; anything else links out, or is named by its namespace when it is not a web address. The base graph leaves all of these out; the full graph, where built, has them merged in.
Biolink categories 4 categories across 13,477 nodes
An item carrying more than one category is counted under each, so these counts can add up to more than the total.
How they were assigned 3,671 of 13,477 nodes (27.2%)
3,671 of these nodes inherit a category from 3 root classes reviewed by Claude Fable 5.1 (claude-fable-5-1), in a Claude Code session with the maintainer on 2026-09-10. Not yet confirmed by a maintainer. These root classes were placed by reading them and their subclasses in the published graph, with the assistance of an AI agent. The reading, the evidence, and the refusals are recorded in reviewed_roots.yaml. See how categories are assigned.
Biolink categories 1 category across 4,419 edges
An item carrying more than one category is counted under each, so these counts can add up to more than the total.