Fig. 1
From: Outlier concepts auditing methodology for a large family of biomedical ontologies
a An excerpt of 12 concepts from NCIt’s Gene hierarchy. Concepts are denoted by round-corner boxes and are connected by is-a relationships represented by upward arrows. Colored rectangles enclose concepts with the same set of relationship types (in bold). Root concepts are shown as bold boxes. b The area taxonomy for a. Areas are presented as colored boxes based on the number of relationship types, i.e., areas with the same number of relationship types have the same color. An area is labeled by the set of its relationship types and the number of concepts that it summarizes in parentheses. Areas are connected by child-of links shown as bold upward arrows. c The partial-area taxonomy for a. Partial-areas are shown as white boxes inside areas. A partial-area is labeled by its root concept and the number of concepts that it summarizes in parentheses. Partial-areas are connected by child-of links represented as bold arrows, as in the area taxonomy