Question about criteria for UVO evaluation videos

[so45jj45]

First of all, thank you for your research.

I have analyzed the provided UVO_frame_val_exist.json, and it appears that evaluation is being conducted on 742 videos. However, the original UVO_sparse dataset's validation json contains information for 2452 videos. I'm curious about the criteria for evaluating only 742 videos, and if there's something I might have missed.

Thank you.