Table 10.

Effect of dictionary matching. The results are for a 10-fold cross validation. The results in Table 5 were for the evaluation test data; cross validation was not used. "GPD1" means the results using GPD1 in dictionary matching. They correspond to the 1^st run in Table 5. "GPD1 with regexp." means the results using GPD1 with regular expressions in dictionary matching. They correspond to the 2^nd run in Table 5. "GPD2" means the results using GPD2 in dictionary matching. They correspond to the 3^rd run in Table 5. "GDP1-stop words" means the results when the stop words were not ignored in dictionary matching on the 1^st run. The parenthesized values are p-values. The values in bold have a statistically significant difference from the 1^st value. A difference is labeled statistically significant when the p-value is less than 0.05 on the Wilcoxon signed-ranks sum test (two-sided).

	GPD1	GPD1 with regexp.	GPD2	GPD1-stop words
Precision	0.8189	0.8199 (0.695)	0.8130 (0.131)	0.8099 (0.006)
Recall	0.7661	0.7668 (1.000)	0.7596 (0.160)	0.7600 (0.049)
Balanced f-score	0.7916	0.7924 (0.770)	0.7854 (0.105)	0.7841 (0.006)