[Examples] Add automatic dataset splitting in language-modeling examples #9133
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Ah, the commit from #9127 seems to have snuck its way in there. Should I remove it? |
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If you can do it easily, that would be best! |
sgugger
approved these changes
Dec 15, 2020
I've tried for a bit but I think I just made things worse ! If that's OK I'll leave it there and I'll fix things at merge time. |
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What does this PR do?
Currently, language-modeling examples support passing a HF-datasets dataset as training data. However, this dataset needs to have a
trainandvalidationsplit, which is not the case for many language-modeling datasets, which are just unstructured text. The updated scripts automatically partition thetrainsplit to create avalidationsplit if it doesn't exist already, and addsvalidation_split_percentageargument to control the split ratio, set to 5% by default.