| DT | Decision Tree |
| SNS | Sympathetic Nervous Systems |
| PNS | Parasympathetic Nervous Systems |
| ECG | Electrocardiogram |
| GSR | Galvanic Skin Response |
| RESP | Respiration |
| VR | Virtual Reality |
| CART | Classification and Regression Tree |
| EGB | Ensemble Gradient Boosting |
| XGB | Extreme Gradient Boosting |
| HR | Heart Rate |
| ApEN | Approximate Entropy |
| LF/HF | High Frequency Ratio |
| LF | Low Frequency |
| HF | High Frequency |
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