Research Article
Identification of Cognitive Distraction Using Physiological Features for Adaptive Driving Safety Supporting System
Table 5
Identification capability for each feature set.
| Set | Selected features | Cognitive load | Hamming decoding | Loss-based decoding |
| | Gaze | No load | 70.6 | 42.5 | Conversation | 45.6 | 45.0 | Arithmetic | 56.4 | 43.0 | Average | 57.5 | 43.5 |
| | Head | No load | 74.8 | 59.7 | Conversation | 52.8 | 55.8 | Arithmetic | 69.3 | 54.8 | Average | 65.6 | 56.8 |
| | Pupil | No load | 88.3 | 84.1 | Conversation | 56.0 | 71.7 | Arithmetic | 76.1 | 76.8 | Average | 73.5 | 77.6 |
| | RRI | No load | 74.7 | 65.7 | Conversation | 42.5 | 48.6 | Arithmetic | 69.0 | 64.0 | Average | 62.1 | 59.4 |
| | Gaze + head | No load | 81.8 | 70.4 | Conversation | 58.2 | 64.5 | Arithmetic | 63.2 | 56.7 | Average | 67.7 | 63.9 |
| | Gaze + pupil | No load | 89.0 | 83.5 | Conversation | 59.6 | 74.1 | Arithmetic | 75.0 | 76.1 | Average | 74.5 | 77.9 |
| | Gaze + RRI | No load | 79.9 | 70.2 | Conversation | 53.0 | 61.7 | Arithmetic | 69.1 | 67.0 | Average | 67.3 | 66.3 |
| | Head + pupil | No load | 91.8 | 87.1 | Conversation | 66.1 | 81.6 | Arithmetic | 75.3 | 78.6 | Average | 77.7 | 82.4 |
| | Head + RRI | No load | 83.8 | 76.2 | Conversation | 59.6 | 70.1 | Arithmetic | 75.2 | 75.5 | Average | 72.8 | 73.9 |
| | Pupil + RRI | No load | 91.2 | 88.3 | Conversation | 63.1 | 83.6 | Arithmetic | 80.3 | 83.9 | Average | 78.4 | 85.3 |
| | Gaze + head + pupil | No load | 92.5 | 87.9 | Conversation | 66.9 | 84.0 | Arithmetic | 74.5 | 80.2 | Average | 78.0 | 84.0 |
| | Gaze + head + RRI | No load | 86.3 | 80.2 | Conversation | 60.4 | 74.8 | Arithmetic | 75.0 | 75.5 | Average | 73.7 | 76.9 |
| | Gaze + pupil + RRI | No load | 91.5 | 88.7 | Conversation | 66.5 | 86.3 | Arithmetic | 80.5 | 83.7 | Average | 79.5 | 86.2 |
| | Head + pupil + RRI | No load | 92.5 | 89.9 | Conversation | 71.1 | 88.1 | Arithmetic | 81.2 | 87.4 | Average | 81.6 | 88.5 |
| | Gaze + head + pupil + RRI | No load | 95.5 | 95.0 | Conversation | 82.5 | 96.8 | Arithmetic | 89.6 | 95.5 | Average | 89.5 | 95.8 |
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