Table 2.
Comparison between AMA and NCI-A
| AMA | NCI-A | |
|---|---|---|
| # of concepts | 2744 | 3304 |
| # of direct subconcepts of owl:Thing | 1056 | 7 |
| Maximum depth of the is-a hierarchy | 9 | 13 |
| # equivalent concepts | 0 | 0 |
| # of inner concepts | 483 | 674 |
| # of leaf concepts | 2261 | 2631 |
| Maximum number of direct subconcepts | 129 | 125 |
| # of concepts with one subconcept | 74 | 125 |
| # of concepts with multiple superconcepts | 110 | 277 |
| Average leaves depth | ||
| (= (sum leaf concepts depth)/(# leaf concepts)): | 3 | 6 |
| Average depth (= (sum concepts depth)/(# concepts)): | 3 | 6 |
| Average number of subconcepts (only concepts with subconcepts): | 5 | 5 |
| Average number of subconcepts (all concepts): | 1 | 1 |