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Table 6 Summary of the results for source vocabularies in UMLS (2015AB release) with redundant relations

From: FEDRR: fast, exhaustive detection of redundant hierarchical relations for quality improvement of large biomedical ontologies

Version # AUIs # is-a Relations TC RR RR% T(ms)
SNOMEDCT_US 846,444 476,055 5,511,334 372 0.00675 28,977
SNOMEDCT_VET 85,939 19,832 29,688 7 0.024 954
GO 148,900 71,687 554,859 1,576 0.2840 9,128
NCI 270,618 119,707 701,986 20 0.0028 5,881
HPO 18,175 14,762 117,366 101 0.0861 502
UMD 34,124 10,750 37,732 20 0.0530 1,906
  1. AUI: Atom Unique Identifier, TC: number of transitive closure pairs, RR: number of redundant is-a relations, T(ms): time taken in milliseconds
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