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README.md

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 # roberta-poetry-happiness-crpo
 
 This model is based on the [RoBERTa base model](https://huggingface.co/roberta-base) (125 M parameters) 
-fine-tuned for 20 epochs on a poetry dataset of 51 MB, selected using an automatic classifier for **happiness**.
+fine-tuned for 20 epochs on a poetry dataset of 51 MB (373k lines, 7.8M words).  This dataset was extracted from 
+the [Gutenberg Poetry Corpus](https://github.com/aparrish/gutenberg-poetry-corpus) using an automatic classifier for **happiness**.
 
 The model replaces a masked word, indicated by the `<mask>` tag, with a word associated with **happiness**, while preserving fluency.
 Caution: the emotion (here, **happiness**) only biases the choice of words with respect to the base model, but do not expect to find