Figure 1
From: Ontology-Based Querying with Bio2RDF’s Linked Open Data

Bio2RDF datasets showing namespace connectivity Circles represent Bio2RDF datasets and the links between them represent a relation between one dataset and another based on IRI namespaces. Datasets with many links may be considered ‘hubs’ that serve to connect multiple datasets in the Bio2RDF network. A All Bio2RDF datasets and their namespace connectivity. B Detail of namespace connectivity for the PharmGKB dataset.