How to understand the SS setting for SYSY?

[liqier]

Thanks for your great job!
In your paper, we konw that on the SYSU 3D Human-Object Interaction Dataset (SYSU), each subject perform each action one time. For the Same Subject (SS) setting, half of the samples of each activity are used for training and the rest for testing. Its means for the same subject, half of the frames of each action are used for training and the rest for testing, right?
Looking forward to your reply!
作者，您好。请问SS setting的意思是针对同一个对象所做的同一个动作视频的前一半帧用于训练，后一半帧用于测试吗？期待您的回复，非常感谢。