Table 2 The number of potentially missing IS-A relations identified for sub-hierarchies
From: Detecting missing IS-A relations in the NCI Thesaurus using an enhanced hybrid approach
| Sub-hierarchy | # of Non-lattice subgraphs | # of suggested missing IS-A relations |
|---|---|---|
| Disease, disorder or finding | 8075 | 34 |
| Experimental organism diagnosis | 257 | 18 |
| Drug, food, chemical or biomedical material | 922 | 1 |
| Molecular abnormality | 143 | 1 |
| Activity | 109 | 1 |