Figure 4.
Group-wise comparison of the number of typing sessions required for prediction probability convergence. Convergence is considered here to be achieved when the cumulative distribution function of the prediction probabilities is lower than 0.05 of the subject’s average prediction probability, as outputted by the best-performing classification pipeline. There is no statistically significant difference between the two subjects groups, in terms of the number of typing sessions required for convergence, as derived by the Mann-Whitney two-sided test (p = 0.15).