Table 7 Specificity performance among proposed and existing SA schemes.

From: Optimized hierarchical CLSTM model for sentiment classification of tweets using boosted killer whale predation strategy

Emotion classes

Proposed OTCNLSTM

BERT-CNN

LSTM

CNN

Anger

90.2

83.5

78.4

76.3

Happy

89.8

83

78.5

76

Neutral

90

83.4

78.4

76.1

Sad

90.2

83.4

78.4

76

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