The confusion matrix resulting from mapping the subset of FactBank used as gold standard against De Facto output is shown in Table 7. The total number at the bottom-right corner corresponds to the number of event/source pairs in the gold standard, that is, the number of instances to be classified with a factuality value. Classes pru and psu are not shown because they have no instance in the gold standard.

Table 7

Confusion matrix: Gold standard (rows) vs. De Facto output (columns).


CT+
CT−
Ctu
PR+
PR−
PS+
PS−
Uu
NA
Total
CT+ 1,131 84 59 1,276 
CT− 13 33 51 
CTu 
PR+ 12 25 
PR− 
PS+ 22 33 
PS− 
Uu 226 17 532 22 804 
Total 1,390 37 10 41 622 89 2,192 

CT+
CT−
Ctu
PR+
PR−
PS+
PS−
Uu
NA
Total
CT+ 1,131 84 59 1,276 
CT− 13 33 51 
CTu 
PR+ 12 25 
PR− 
PS+ 22 33 
PS− 
Uu 226 17 532 22 804 
Total 1,390 37 10 41 622 89 2,192 

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