Table 3: Confusion matrix of the proposed recognition model using UCF sports dataset (unit: %).

ActivitiesDivingGSKickingLiftingHBRRunSkatingBSWalk

Diving9512101000
GS1940021110
Kicking0298000000
Lifting1119410011
HBR0020961010
Running0300097000
Skating1011019501
BS0001010971
Walking00000000100
Average96.22

GS: golf swinging, HBR: horseback riding, and BS: baseball swinging.