Table 4.

Performance of machine learning system on seven-topic classification

Class	Precision	Recall	F-Measure
Information	0.714	0.645	0.678
Evaluation	0.911	0.895	0.903
Insurance	1	0.625	0.769
Order	1	0.5	0.667
Positive	0.707	0.829	0.763
Negative	0.789	0.909	0.845
VUS	0.92	0.958	0.939
Overall—ML	0.833	0.823	0.82
Overall—rule	0.87	0.93	0.91