Ask HN：训练物理 AI 模型时，你遇到过哪些隐蔽的数据问题？

I'm training a physical AI models on egocentric videos and faced some data quality issues i only became aware of it after training. Some of those data quality issues i faced are: labels assigned to the wrong motion, motion blur, hand out of frame. What silent data problems have you faced, and how you find them, and how you did handle them?