Table 1.
The set of features for predicting whether two UMLS concepts are in a treatment relation.
| Feature | Description |
|---|---|
| f1:semrep | Boolean feature that is true whether SemRep indicates a treatment relation between the two concepts. |
| f2:medi | Boolean feature that is true whether there is a match between the two concepts and a medication-indication pair in MEDI. |
| f3:semrep or medi | Boolean feature that is true whether f1 is true or f2 is true. |
| f4:unigram | The lowercased word unigrams surrounding the two concepts. |
| f5:bigram | The lowercased word bigrams surrounding the two concepts. |
| f6:expression | The lowercased word expression describing each of the two concepts. |
| f7:cui | The concept unique identifiers (CUIs) of the two concepts. |
| f8:sem type | The semantic types associated with the two concepts. |