Table 2.
Top 10 features and mean accuracy for each model
| 4-Way Classification | Target Discriminability | Time Pressure | |||||
|---|---|---|---|---|---|---|---|
| Feature Rank | Eye &Head M = 0.66 | Eye M = 0.63 | Head M = 0.39 | Eye M = 0.85 | Head M = 0.65 | Eye M = 0.77 | Head M = 0.64 |
| 1 | Target Fixations per Target | Target Fixations per Target | Global Head Movement per Sec | Distractor Fixation Frequency | Global Head Movement per Sec | Target Fixations per Target | Avg Head Acceleration X |
| 2 | Distractor Fixations per Distractor | Distractor Fixations per Distractor | Std Head Velocity X | Distractor Fixation Frequency | Avg Head Velocity Z | Target Fixation Frequency | Std Head Velocity Z |
| 3 | Saccade Frequency | Saccade Frequency | Avg Head Velocity X | Distractor Fixations per Distractor | Avg Head Fixation Duration | Avg Target Fixation Duration | Std Head Velocity X |
| 4 | Distractor Fixation Duration Proportion | Distractor Fixation Duration Proportion | Avg Head Acceleration X | Target Fixations per Target | Avg Head Jerk | Saccade Size per Sec | Head Amplitude per Sec |
| 5 | Distractor Fixation Frequency | Target Fixation Frequency | Head Amplitude per Sec | Target Fixation Duration Proportion | Head Movement Frequency | Saccade Frequency | Std Head Jerk X |
| 6 | Target Fixation Frequency | Distractor Fixation Frequency | Head Fixation Frequency | Fixation Duration Proportion | Head Fixation Duration Proportion | Avg Eye Acceleration X | Avg head Fixation Duration |
| 7 | Fixation Duration Proportion | Target Fixation Duration Proportion | Avg Head Fixation Duration | Avg Eye Velocity X | Std Head Velocity X | Target Fixation Duration Proportion | Head Fixation Frequency |
| 8 |
Target Fixation Duration Proportion |
Fixation Duration Proportion | Avg Head Jerk | Avg Eye Jerk Y | Avg Head Velocity | Avg Eye Jerk X | Avg Head Jerk X |
| 9 | Avg Eye in Head Angle | Avg Eye in Head Angle | Avg Head Velocity X | Avg Eye Acceleration Y | Avg Head Velocity X | Distractor Fixations per Distractor | Avg Head Jerk |
| 10 | Saccade Size per Sec | Avg Eye Acceleration X | Avg Head Jerk X | Avg Saccade Size | Avg Head Movement Size | Avg Eye Velocity | Std Head Velocity Y |
Avg = Average; Std = Standard Deviation; Sec = Second; See Table 1 for feature definitions