Biomedical Text Categorization Based on Ensemble Pruning and Optimized Topic Modelling

Table 5

Classification accuracies obtained with different LDA-based configurations.

	Naive Bayes (NB)					Support Vector Machines (SVM)
Configuration	oh5	oh10	oh15	ohscal	Ohsu-med	oh5	oh10	oh15	ohscal	Ohsu-med
LDA (k=50)	74.38	66.66	69.40	59.27	28.35	76.24	78.73	83.17	70.62	34.64
LDA (k=100)	70.85	63.64	67.44	60.05	29.56	78.28	78.25	83.23	73.23	38.82
LDA (k=150)	69.02	65.24	65.51	59.01	29.43	76.72	79.09	84.74	73.8	41.27
LDA (k=200)	66.17	64.01	63.61	58.93	27.99	77.33	77.93	84	74.19	41.82
GA-LDA (BIC)	75.16	67.24	74.70	71.66	35.45	77.98	69.03	75.12	73.62	35.83
PSO-LDA (BIC)	75.40	68.60	76.90	72.43	35.46	78.22	72.56	75.17	75.89	36.23
FA-LDA (BIC)	75.48	71.26	77.48	72.80	35.60	79.50	74.73	76.63	76.90	37.69
CSA-LDA (BIC)	76.66	71.96	78.77	72.94	35.65	79.56	75.97	77.96	77.02	37.94
BA-LDA (BIC)	78.82	72.21	79.77	73.02	36.58	79.85	76.53	78.89	77.34	38.89
GA-LDA (CH)	79.02	72.88	80.11	74.53	36.85	80.62	77.72	80.31	78.17	38.96
PSO-LDA (CH)	80.20	72.93	80.66	74.76	37.03	81.50	77.91	80.50	78.99	39.03
FA-LDA (CH)	81.20	72.99	80.72	75.13	37.75	81.80	77.99	80.55	79.09	39.03
CSA-LDA (CH)	81.40	73.12	81.71	76.02	38.34	82.61	78.01	80.78	79.82	39.03
BA-LDA (CH)	81.46	73.49	81.82	76.21	39.24	82.87	78.93	81.01	79.89	39.52
GA-LDA (DB)	84.46	76.22	84.13	78.71	40.50	84.73	80.95	85.88	82.46	43.02
PSO-LDA (DB)	84.60	80.07	85.14	79.21	42.57	85.13	81.11	86.17	84.22	43.51
FA-LDA (DB)	85.89	80.82	85.17	80.83	44.60	86.22	81.88	86.73	84.62	44.61
CSA-LDA (DB)	86.42	80.97	86.10	81.69	45.21	86.79	82.00	86.96	85.07	46.67
BA-LDA (DB)	87.60	81.36	87.32	83.56	47.00	88.86	82.09	88.05	85.24	50.08
GA-LDA (SI)	81.57	73.57	82.03	76.48	39.36	83.21	79.00	82.24	79.93	40.58
PSO-LDA (SI)	82.61	73.76	82.50	76.61	39.66	83.58	79.33	83.03	80.36	40.87
FA-LDA (SI)	83.19	74.18	82.88	77.47	39.68	83.69	79.41	83.11	80.95	40.95
CSA-LDA (SI)	83.78	75.11	83.01	78.06	39.69	83.84	80.83	84.47	81.82	41.12
BA-LDA (SI)	84.11	76.08	83.03	78.13	40.08	84.49	80.90	85.52	81.99	42.65

LDA: latent Dirichlet allocation, GA-LDA: genetic algorithm based LDA, PSO-LDA: particle swarm optimization based LDA, FA-LDA: firefly algorithm based LDA, CSA-LDA: cuckoo search algorithm based LDA, BA-LDA: bat algorithm based LDA, BIC: Bayesian information criterion, CH: Calinski-Harabasz index, DB: Davies-Bouldin index, and SI: Silhouette index.