| Model | Acc (%) | MSE |
| (Mueller and Thyagarajan, 2016) | 81.9 | 0.134 |
| BiLSTM | 79.5 | 0.154 |
| LSTM + FNN | 85.5 | 0.111 |
| LSTM + attention | 81.4 | 0.137 |
| LSTM + FNN + attention | 86.1 | 0.103 |