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Table 7 The 2 × 2 contingency table for concept errors between the lower-indexed-half levels and higher-indexed-half levels

From: Missing lateral relationships in top-level concepts of an ontology

Level range # erroneous concepts # concepts w/o errors Error percentage
0–4 (lower-indexed-half) 126 214 37.1
5–9 (higher-indexed-half) 106 67 61.3