Fig. 4
From: An ontology-based search engine for digital reconstructions of neuronal morphology
Logical relations. a Schematic of the ontological links between concepts within hierarchy (black arrows) and across hierarchies (red arrows). The OntoSearch algorithm traverses the nodes to find direct hits (green) and possible hits (orange). The hooks (purple), equivalent concepts (green), and disjoint nodes (blue) also influence the equation for direct hits (D) and possible hits (P). b Subset of logical relations among hippocampus regions and layers. Not all links are displayed for the sake of display clarity. (Color figure online)