Ground-Truth Acquisition Methodology

[Chaoyue-cpu]

Thank you for your work. I noticed that your ground truth is obtained by aligning LiDAR scans with a global map. However, since the map is changing and you only provided one ground-truth map, are all LiDAR frames aligned against this single map? Would changes in the map introduce errors． I look forward to your reply, as this is very important to me—I am currently working on the topic of LiDAR-based map updating.