Table 2.
Preliminary evaluation results of experiments.
| Category (system identification) | Test group 1 | Test group 2 | Test group 3 | Control group |
|---|---|---|---|---|
| English features | 8.7 | 9.6 | 9.3 | 9.1 |
| Feature extraction | 8.6 | 8.9 | 9.5 | 9.6 |
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