Negative accuracy in annotation suggestion?

Hi,
While nlp training for a particular concept (with UMLS cui filter), there have been multiple incidences where the highlighted text shows negative accuracy of the concept.
What does it mean? How the number eventually turn out?
negative accuracy

Hi, any update on this?
Hi,
While nlp training for a particular concept (with UMLS cui filter), there have been multiple incidences where the highlighted text shows negative accuracy of the concept.
What does it mean? How the number eventually turn out?