Biomedical Text Categorization Based on Ensemble Pruning and Optimized Topic Modelling

Table 8

The macro-averaged F-measure results 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)	0.75	0.68	0.71	0.61	0.30	0.77	0.80	0.85	0.73	0.36
LDA (k=100)	0.72	0.65	0.69	0.62	0.31	0.79	0.80	0.85	0.75	0.40
LDA (k=150)	0.70	0.67	0.67	0.61	0.31	0.77	0.81	0.86	0.76	0.43
LDA (k=200)	0.67	0.65	0.65	0.61	0.29	0.78	0.80	0.86	0.76	0.44
GA-LDA (BIC)	0.76	0.69	0.76	0.74	0.37	0.79	0.70	0.77	0.76	0.37
PSO-LDA (BIC)	0.76	0.70	0.78	0.75	0.37	0.79	0.74	0.77	0.78	0.38
FA-LDA (BIC)	0.76	0.73	0.79	0.75	0.37	0.80	0.76	0.78	0.79	0.39
CSA-LDA (BIC)	0.77	0.73	0.80	0.75	0.37	0.80	0.78	0.80	0.79	0.40
BA-LDA (BIC)	0.80	0.74	0.81	0.75	0.38	0.81	0.78	0.81	0.80	0.41
GA-LDA (CH)	0.80	0.74	0.82	0.77	0.38	0.81	0.79	0.82	0.81	0.41
PSO-LDA (CH)	0.81	0.74	0.82	0.77	0.39	0.82	0.79	0.82	0.81	0.41
FA-LDA (CH)	0.82	0.74	0.82	0.77	0.39	0.83	0.80	0.82	0.82	0.41
CSA-LDA (CH)	0.82	0.75	0.83	0.78	0.40	0.83	0.80	0.82	0.82	0.41
BA-LDA (CH)	0.82	0.75	0.83	0.79	0.41	0.84	0.81	0.83	0.82	0.41
GA-LDA (DB)	0.85	0.78	0.86	0.81	0.42	0.86	0.83	0.88	0.85	0.45
PSO-LDA (DB)	0.85	0.82	0.87	0.82	0.44	0.86	0.83	0.88	0.87	0.45
FA-LDA (DB)	0.87	0.82	0.87	0.83	0.46	0.87	0.84	0.89	0.87	0.46
CSA-LDA (DB)	0.87	0.83	0.88	0.84	0.47	0.88	0.84	0.89	0.88	0.49
BA-LDA (DB)	0.88	0.83	0.89	0.86	0.49	0.90	0.84	0.90	0.88	0.52
GA-LDA (SI)	0.82	0.75	0.84	0.79	0.41	0.84	0.81	0.84	0.82	0.42
PSO-LDA (SI)	0.83	0.75	0.84	0.79	0.41	0.84	0.81	0.85	0.83	0.43
FA-LDA (SI)	0.84	0.76	0.85	0.80	0.41	0.85	0.81	0.85	0.83	0.43
CSA-LDA (SI)	0.85	0.77	0.85	0.80	0.41	0.85	0.82	0.86	0.84	0.43
BA-LDA (SI)	0.85	0.78	0.85	0.81	0.42	0.85	0.83	0.87	0.85	0.44

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.