Hello, I'm trying to understand the named entity recognition aspect of cTAKES.
If I pass-in a text such as below *Lexapro 10 mg oral tablet 3 times a day* cTAKES finds a single MedicationEventMention with the RxNorm code = 352741. However looking in the RXCONSO database, I see that there is one specific entry for the 10 mg. 352741|ENG||||||1551887|1551887|352741||RXNORM|BN|352741|Lexapro||N|4096| 352272|ENG||||||1937400|1937400|352272||RXNORM|SY|352272|Lexapro 10 MG Oral Tablet||N|4096| But, cTAKES always resorts to finding the first entry (without 10 mg). I did however notice that in certain cases it finds two annotations. For example *Aspirin 325 mg two times a day* Comes up with two annotations - Asprin 325 mg (code 317300) and Aspirin (code 1191) 317300|ENG||||||1481682|1481682|317300||RXNORM|SCDC|317300|Aspirin 325 MG||N|4096| 1191|ENG||||||2596464|2596464|1191||MTHSPL|SU|R16CO5Y76E|Aspirin||N|4096| Any thoughts as to why there might be a difference in the lookup. Thanks -- Best Regards Kannan Thiagarajan
