Computational and Mathematical Methods in Medicine

Research Article

Age-Related Evolution Patterns in Online Handwriting

Table 2

Main characteristics of first-layer clusters.
 DynamicsInclinationPressureCurvaturePen-up
Cluster 1Low speed, accel, jerkStraightAverageRound strokesAverage
Cluster 2Very low speed, accel, jerkStraightLowRound strokesMany
Cluster 3High speed, accel, jerkInclined rightAverageStraight strokesVery few
Cluster 4Average speed, accel, jerkInclined rightHighStraight strokesAverage
Cluster 5Average speed, accel, jerkStraightAverageAverageMany
Cluster 6Average dyn. on ,
low dyn. on 		StraightAverageAverageAverage
Cluster 7Average speed, accel, jerkStraightAverageRound strokesAverage
Cluster 8High dyn. on , 
average dyn. on 		StraightAverageStraight strokesFew
Cluster 9Very high speed, accel, jerkInclined rightAverageStraight strokesAverage