Table 4.

The effect of the post-processing procedures on overall system performance.

CV Average	All PP	No PP	No rule	No abbreviation	No lexicon
Precision	82.0%	68.0%	74.2%	81.0%	73.1%
Recall	81.1%	76.6%	80.1%	79.8%	79.8%
F-mesure	81.6%	72.0%	77.0%	80.4%	76.3%
Delta-F	base	-9.5%	-4.5%	-1.2%	-5.2%

This table shows the effects of each post-processing procedures in comparison with the all post-processing results. For example, No rule column shows the results without rule-based post-processing, that shows 4.5% lower score than All Post-processing in F-measure.