Table III:

Classification with Topic Vectors

Number of Topics	Dimension Reduction	Decision Tree			SVM
		Precision	Recall	F-score	Precision	Recall	F-score
2	0.999	0.766	0.875	0.817	0.766	0.875	0.817
3	0.998	0.901	0.908	0.903	0.905	0.912	0.907
5	0.997	0.93	0.93	0.93	0.935	0.936	0.935
10	0.995	0.941	0.943	0.942	0.954	0.955	0.954
15	0.992	0.953	0.954	0.953	0.957	0.958	0.957
20	0.989	0.952	0.951	0.952	0.961	0.962	0.962
25	0.987	0.948	0.948	0.948	0.959	0.96	0.96
30	0.984	0.953	0.954	0.954	0.964	0.965	0.965
50	0.973	0.943	0.942	0.943	0.962	0.963	0.962
100	0.946	0.941	0.941	0.941	0.968	0.968	0.968
150	0.919	0.945	0.946	0.94	0.968	0.969	0.968
200	0.892	0.942	0.943	0.943	0.967	0.968	0.967
250	0.865	0.939	0.938	0.938	0.965	0.966	0.966
300	0.838	0.94	0.94	0.94	0.962	0.962	0.962
400	0.784	0.938	0.938	0.938	0.961	0.961	0.961
500	0.73	0.935	0.935	0.935	0.961	0.962	0.962