BERT is a pretrained transformer-based language model used for transfer learning when labeled text is limited. A frozen pretrained model supplies reusable language features without training a transformer from scratch. section 13.4 section 13.4.1
A practical BERT workflow:
- Start with a small labeled AG News split to make limited-data transfer learning visible. section 13.4
- Install Hugging Face Transformers and load a pretrained DistilBERT model with its matching tokenizer. section 13.4.1
- Encode raw text with the original BERT-compatible process, padding each batch before sending tensors to the model. section 13.4.1
Small-data text classification
Compare a GRU trained on 256 labeled examples with a frozen DistilBERT transfer-learning setup. DistilBERT keeps the example computationally manageable while retaining the benefit of pretrained transformer representations. section 13.4 section 13.4.1
from transformers import DistilBertTokenizer, DistilBertModel #1 tokenizer = DistilBertTokenizer.from_pretrained(’distilbert-base-uncased’) #2 bert_model = DistilBertModel.from_pretrained(’distilbert-base-uncased’)
Inspect the concise PyTorch and Hugging Face setup that loads the tokenizer and matching pretrained DistilBERT model. section 13.4.1








