Get different results with yours when I run plot_pr_curves.py

Hi, thanks for your great work! when I run plot_pr_curves.py( on MacBook Pro 4), I get the following result, this is different with official precision-recall curve in README, can you please explain where's gap? 

<img width="1998" height="1506" alt="Image" src="https://github.com/user-attachments/assets/91bb60ef-8a0f-47c9-9153-7ec38618d1b6" />