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  This guide will show you how to apply prefix tuning to train a t5-large model on the sentences_allagree subset of the financial_phrasebank dataset.
  Before you begin, make sure you have all the necessary libraries installed:
  
  
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  !pip install -q peft transformers datasets
  
  Setup
  	
  Start by defining the model and tokenizer, text and label columns, and some hyperparameters so it’ll be easier to start training faster later. Set the environmen