Processing long term afib database and creating model ( IIT/NIT/BITs/IIIT or other students can do this quickly )

I am testing https://physionet.org/content/ltafdb/1.0.0/ data using my own model but due noise or other issue I am not able to test it with high accuracy. There are many papers which are using this database successfully.

https://biomedical-engineering-online.biomedcentral.com/articles/10.1186/1475-925X-13-18#Sec21
https://medium.com/towards-data-science/atrial-fibrillation-classification-using-machine-learning-11a3dd75b3ed

Let me know if you are interested, I can guide you.