Fig. 2
From: Big knowledge visualization of the COVID-19 CIDO ontology evolution
The aggregation process of an excerpt of the CIDO partial-area taxonomy: a An excerpt of the partial-area taxonomy for the June 14, 2020 release of CIDO. b The weighted aggregate taxonomy obtained for the partial-area taxonomy in (a) using parameter b = 10. The aggregate partial-area nodes are shown with rounded-corner rectangles