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Table 2 Summary of the results for 5 versions of SNOMED CT

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

Version # Concepts # is-a Relations TC RR RR % T(ms)
2013-09-01 300,485 447,442 5,226,630 240 0.00459 10,472
2014-03-01 300,409 446,603 5,188,221 277 0.00534 10,335
2014-09-01 302,902 449,564 5,222,506 305 0.00584 10,074
2015-03-01 315,904 467,799 5,408,010 235 0.00435 15,264
2015-09-01 320,911 476,226 5,511,334 372 0.00675 16,077
  1. TC: number of transitive closure pairs, RR: number of redundant is-a relations, T(ms): time taken in milliseconds