For the NER task pertaining to the detection of drugs, the main source of false negatives is abbreviated drug names, while false positives are mostly adjectives that are also used as drug names (for e.g. “sedatives”). The reported F1-score is 0.76. A baseline NER that relies on a ...
Turning to the negative contexts, we see that Spanishalgúnand Portuguesealgumcan be found as existential indefinites taking narrow scope with respect to sentential negation (to which I restrict my attention), cf. (1b) and (2b). In both languages, the determiner must follow the noun when in...