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Fine-tune a Large Language Model with Python

Learn how to fine-tune a BERT from scratch on a custom dataset

Marcello Politi
Towards Data Science
4 min readApr 18, 2023

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In this article, we will deal with the fine-tuning of BERT for sentiment classification using PyTorch. BERT is a large language model that offers a good balance between popularity and model size, which can be fine-tuned using a simple GPU. We can download a pre-trained BERT from

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