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. 2018 May 25;57(Suppl 1):e22–e29. doi: 10.3414/ME17-02-0010

Table 5.

Error analysis of wrong classified concepts in the negation detection.

Chest X-ray Discharge letter Combined
Sentence splitting 3 (0.25) 2 (0.06) 5 (0.12)
Wrong documentation 1 (0.08) 0 (0.00) 1 (0.02)
Complex sentence structure 3 (0.25) 5 (0.16) 8 (0.19)
Missing negation triggers 5 (0.42) 24 (0.77) 29 (0.67)