about evaluate code

I saw that the evaluation in the paper include LVE, LVD, FDD 。What is the use of evaluation code? https://github.com/X-niper/UniTalker/blob/21481130f126f950e646c828d7984984b1168feb/main/train_eval_loop.py#L53 or https://github.com/Doubiiu/CodeTalker/blob/main/main/cal_metric.py ? I'm not quite sure. use main.train_eval_loop validate_epoch function， UniTalker-B-D0-D7.pt ，I got D6, LVE: 1.7654369774677076e-05 D7, LVE: 1.6267115271867665e-05 UniTalker-L-D0-D7.pt D6, LVE: 1.4552190598325897e-05 D7, LVE: 1.5810318571501697e-05 This is different from the paper I am a beginner， look forward to your reply， thx