Probem of the result of test set that submitt on the KITTI benchmark

[Feidashen1]

Hello, your work is very meaningful, but when I reproduced this work, I verified that the results in the paper could be achieved on the validation set. However, after submitting the results of the test set on the Kitti platform, there was a significant gap between your results and yours.

What do you think are the possible problems? How can I achieve results similar to yours on the test set?