Text Classification Using Novel Term Weighting Scheme-Based Improved TF-IDF for Internet Media Reports

Table 14

Performance on the Fudan corpus using the NB classifier.

NB	Precision					Recall					F1 score
	TF-IDF (%)	TF-IADF (%)	TF-IADFnorm (%)	TF-IADF^+	TF-IADF^+norm (%)	TF-IDF (%)	TF-IADF (%)	TF-IADFnorm (%)	TF-IADF^+ (%)	TF-IADF^+norm (%)	TF-IDF (%)	TF-IADF (%)	TF-IADFnorm	TF-IADF^+ (%)	TF-IADF^+norm (%)
C11	94.98	94.57	94.53	94.99	94.83	91.28	89.56	88.79	91.59	91.43	93.09	92.00	91.57	93.26	93.10
C15	93.75	100.00	100.00	93.75	93.75	45.46	30.30	27.27	45.46	45.46	61.22	46.51	42.86	61.22	61.22
C16	66.67	100.00	100.00	75.00	80.00	7.14	3.57	3.57	10.71	14.29	12.90	6.90	6.90	18.75	24.24
C17	87.50	86.67	83.33	93.75	94.12	51.85	48.15	37.04	55.56	59.26	65.12	61.91	51.28	69.77	72.73
C19	96.38	96.02	95.87	96.46	96.38	96.17	96.02	95.80	96.17	96.17	96.28	96.02	95.84	96.31	96.28
C23	93.33	92.31	100.00	94.74	90.00	41.18	35.29	20.59	52.94	52.94	57.14	51.06	34.15	67.93	66.67
C29	86.36	87.88	87.10	86.36	88.89	64.41	49.15	45.76	64.41	67.80	73.79	63.04	60.00	73.79	76.92
C3	82.94	81.81	81.19	83.43	83.51	94.34	95.15	95.42	94.34	94.21	88.27	87.98	87.73	88.55	88.54
C31	97.59	97.89	97.78	97.69	97.69	92.94	91.38	90.48	93.76	93.76	95.21	94.52	93.99	95.69	95.69
C32	91.92	90.70	90.35	91.68	91.60	90.22	88.75	87.97	90.61	90.71	91.06	89.71	89.14	91.14	91.15
C34	85.05	82.86	81.32	85.76	86.20	92.76	92.69	92.44	92.94	92.88	88.74	87.50	86.52	89.21	89.42
C35	87.50	86.96	87.50	86.96	86.96	40.39	38.46	40.39	38.46	38.46	55.26	53.33	55.26	53.33	53.33
C36	90.91	88.89	93.33	90.91	90.91	37.74	30.19	26.42	37.74	37.74	53.33	45.07	41.18	53.33	53.33
C37	78.85	84.09	81.40	78.43	78.85	53.95	48.68	46.05	52.63	53.95	64.06	61.67	58.82	62.99	64.06
C38	84.30	83.12	82.16	85.46	85.55	92.11	92.59	92.01	92.20	92.30	88.03	87.60	86.81	88.70	88.80
C39	89.30	88.29	87.30	89.39	89.39	93.86	93.22	92.66	94.02	94.02	91.52	90.69	89.90	91.64	91.64
C4	50.00	100.00	100.00	50.00	50.00	5.88	5.88	5.88	5.88	5.88	10.53	11.11	11.11	10.53	10.53
C5	80.00	75.00	71.43	87.50	77.78	13.12	9.84	8.20	11.48	11.48	22.54	17.39	14.71	20.29	20.00
C6	90.00	90.00	90.00	90.00	90.00	20.00	20.00	20.00	20.00	20.00	32.73	32.73	32.73	32.73	32.73
C7	69.10	71.76	72.49	68.97	69.17	66.88	66.24	64.74	68.38	69.02	67.97	68.89	68.40	68.67	69.09