Table 5 Precision 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

89.9

83.5

78.1

73.3

Happy

89.4

83

78.3

73

Neutral

89.6

83.6

78.1

73.2

Sad

89.4

83.8

78.3

73.4

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