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Table 11 Comparison with state-of-art techniques

From: Detection and classification of social media-based extremist affiliations using sentiment analysis techniques

Study

Techniques

Features

P (%)

R (%)

F (%)

A (%)

Wei et al. [8]

Machine learning (KNN)

Classical features (tf, idf, tfxidf)

BOW

73

71

71

74

Azizan and Aziz [7]

Machine learning (NB)

Classical features (tf, idf, tfxidf)

70

68

69

72

Proposed

Deep learning (LSTM + CNN)

Word embedding

90

86

84

92

Chalothorn and Ellman [17]

Lexicon-based (Senti WordNet)

Sentiment scores and polarity classes

69

68

69

73

Other Models

Deep learning (LSTM)

Word embedding

85

84

83

85

Deep learning (CNN)

Word embedding

88

84

83

88

Machine learning (SVM)

Tf xidf

79

78

79

79

Machine learning (RF)

Tf xidf

83

81

82

84