As an experienced Machine Learning (ML) specialist with an unwavering commitment to quality and client satisfaction, I am confident that I possess the necessary Python programming skills not only to edit your existing code, but to also incorporate the required stratified 5-fold cross-validation effectively. With an understanding of your specific project requirements, I will adapt my strong problem-solving skills to ensure your three models (DistilBert, Roberta, and BERT) are adequately fine-tuned and evaluated using the train and test portions of each dataset.
Drawing from my extensive experience in artificial intelligence, machine learning, deep learning, and data analysis, I'm well-equipped to manage this task. Naturally, pytorch is one of my most utilized tool for machine learning development. This should assure you that I have a firm grasp of the techniques required to handle this project.
Finally, I understand how important clear communication and a mutual understanding are in ensuring project success. By keeping an open line of communication throughout the project lifecycle, I will make sure that we stay aligned on project goals, deadlines and deliverables while providing a cost-effective solution without comprising quality. If you choose me for this project you won't be disappointed