Figure 3
From: Using GPS-derived speed patterns for recognition of transport modes in adults
Results of cross validation using three different speed metrics. Box plots of Kappa coefficients derived from cross-validation using combinations of different speed metrics in the discriminant analysis, shown are Kappa values for sequences of more than one minute duration. Top panel (A): classifying walking, biking, bus, train and car travels; Bottom panel (B): combining motorized traffic into one category. Legend: 1 = mean, 2 = 95th percentile of speed, 3 = standard deviation, 4 = rate-of-change (RCM), 5 = rate-of-change standardized (RCMs), 6 = acceleration, 7 = deceleration.