As of 2.0.0, all empty strings will return a score of 0. Prior, the partial scoring system would return a score of 100, regardless if the other input had correct value or not. This was a result of the ...
@article{Weng2020_AB3DMOT, author = {Weng, Xinshuo and Wang, Jianren and Held, David and Kitani, Kris}, journal = {IROS}, title = {{3D Multi-Object Tracking: A Baseline and New Evaluation Metrics}}, ...