| 44 different keywords | Search | Percent |
| metamap | 31 | 34.4 % |
| xml | 5 | 5.5 % |
| source | 3 | 3.3 % |
| umlsks | 3 | 3.3 % |
| breaking | 3 | 3.3 % |
| nlm | 2 | 2.2 % |
| vocabularies | 2 | 2.2 % |
| 2008 | 2 | 2.2 % |
| phrase | 2 | 2.2 % |
| aronson | 2 | 2.2 % |
| umls | 2 | 2.2 % |
| mmo | 1 | 1.1 % |
| file | 1 | 1.1 % |
| map | 1 | 1.1 % |
| cr | 1 | 1.1 % |
| debug | 1 | 1.1 % |
| concept | 1 | 1.1 % |
| algorithm | 1 | 1.1 % |
| interactive | 1 | 1.1 % |
| semantic-types | 1 | 1.1 % |
| data | 1 | 1.1 % |
| output | 1 | 1.1 % |
| element | 1 | 1.1 % |
| prolog | 1 | 1.1 % |
| metathesaurus | 1 | 1.1 % |
| suppresion | 1 | 1.1 % |
| algorithms | 1 | 1.1 % |
| detection | 1 | 1.1 % |
| prase | 1 | 1.1 % |
| phrases | 1 | 1.1 % |
| to | 1 | 1.1 % |
| filebuilder | 1 | 1.1 % |
| algorithem | 1 | 1.1 % |
| help | 1 | 1.1 % |
| omim | 1 | 1.1 % |
| java | 1 | 1.1 % |
| installing | 1 | 1.1 % |
| pneumonia | 1 | 1.1 % |
| format | 1 | 1.1 % |
| -o | 1 | 1.1 % |
| switch | 1 | 1.1 % |
| nih | 1 | 1.1 % |
| builder | 1 | 1.1 % |
| negation | 1 | 1.1 % |
|