ACL 2023 Bi-level Finetuning with Task-dependent Similarity Structure - https://aclanthology.org/2023.findings-acl.544/
Betty (library to solve bi-level optimization problem) might have been updated to a later version with different data handling like using dictionary instead of tuples. Please update the code accordingly.
Link to download U and V files https://drive.google.com/drive/folders/1civzbblrMLxbFY2QiCMSyftMvKd7cDPM?usp=sharing