Research Article
An Adaptive Calibration Framework for mVEP-Based Brain-Computer Interface
Table 4
Performance of both calibrations when the threshold for reliable sample selection takes different values.
| | Subjects | Adaptive calibration by SVM and fCM (accuracy (%)/ITR) | SVM | | 0.6 | 0.65 | 0.7 | 0.75 | 0.8 |
| | S1 | 83.3/12.4 | 83.3/12.4 | 86.1/13.4 | 86.1/13.4 | 83.3/12.4 | 83.3/12.4 | | S2 | 94.4/17.1 | 91.7/15.8 | 94.4/17.1 | 94.4/17.1 | 94.4/17.1 | 91.7/15.8 | | S3 | 72.2/8.7 | 69.4/7.9 | 69.4/7.9 | 69.4/7.9 | 66.7/7.2 | 66.7/7.2 | | S4 | 94.4/17.1 | 91.7/15.8 | 91.7/15.8 | 94.4/17.1 | 94.4/17.1 | 91.7/15.8 | | S5 | 80.6/11.4 | 80.6/11.4 | 80.6/11.4 | 77.8/10.4 | 77.8/10.4 | 75/9.5 | | S6 | 88.9/14.6 | 88.9/14.6 | 91.7/15.8 | 91.7/15.8 | 91.7/15.8 | 88.9/14.6 | | S7 | 88.9/14.6 | 94.4/17.1 | 91.7/15.8 | 94.4/17.1 | 91.7/15.8 | 91.7/15.8 | | S8 | 91.7/15.8 | 91.7/15.8 | 94.4/17.1 | 94.4/17.1 | 91.7/15.8 | 88.9/14.6 | | S9 | 97.2/18.7 | 94.4/17.1 | 94.4/17.1 | 94.4/17.1 | 94.4/17.1 | 94.4/17.1 | | S10 | 80.6/11.4 | 83.3/12.4 | 80.6/11.4 | 83.3/12.4 | 80.6/11.4 | 77.8/10.4 | | S11 | 94.4/17.1 | 94.4/17.1 | 94.4/17.1 | 91.7/15.8 | 91.7/15.8 | 91.7/15.8 |
| | Mean ± std | / | / | / | / | / | / |
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denotes that the adaptive calibration method results are significantly higher than those of SVM approach ( , paired -test). |
