Confusion on the ablation study in the paper

[jkd2021]

Hi, I really appreciate your great job on PCAN. Now I'm reading the ablation study part of the paper, and fell really confused on the Table 3 and Table 4:

My confusions are 1. does this "varying temporal memory length" in Table 3 mean the "memo_tracklet_frames" in the tracker or something else?

2. which part of the code does this "multi-layer prototypical feature fusion" in Table 4 mean? Does it represent the "memo_banks" as shown or something else?
   

I'll definitely appreciate it, if somebody can give me a help !!