[Evaluation] Classification's common evaluation metrics

[Durant35]

• Precision-recall curve
• Confusion matrix

https://github.com/Durant35/paper_tracking/blob/master/2005CVPR_Evaluating%20Multi-Object%20Tracking/README.pdf

[Durant35]

Teichman A, Levinson J, Thrun S. Towards 3D object recognition via classification of arbitrary object tracks[C]//Robotics and Automation (ICRA), 2011 IEEE International Conference on. IEEE, 2011: 4034-4041.

[Durant35]

计算precision

计算recall