M-DA: A Multifeature Text Data-Augmentation Model for Improving Accuracy of Chinese Sentiment Analysis

Table 6

The comparison results of a single model.

Model	Accuracy	Precision	Recall	F1
Word-BiLSTM	89.24	90.56	87.50	89.02
Word-BiLSTM-attention	90.45	90.28	90.60	90.44
Char-BiLSTM-attention	90.86	89.79	92.10	90.95
Char_4tag_pos-BiLSTM-attention	91.13	91.36	90.80	91.07

(i) The meaning of bold in “model” column: just to make the model name more visually prominent. (ii) The meaning of the bold values provided in the “Accuracy\Precision\Recall\F1” columns: just to highlight the highest value in each column.