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Table 8 Statistics of extraction errors by our method

From: Improving chemical disease relation extraction with rich features and weakly labeled data

Error type FN FP Total %
NER or normalization errors 254 58 312 39.90
CID relations mentioned in single sentences 148 124 272 34.78
CID relations asserted across sentences 63 54 117 14.96
Extracted disease or chemical in CID is too general 0 46 46 5.88
The extracted disease/chemical pair is a treatment relation 0 29 29 3.71
Annotated CID relations absent in the abstract 6 0 6 0.77
Total 471 311 782