* Fix issues in test_exponential_decay_length_penalty
Fix tests which were broken and add validation of negative scores.
Current test didn't take into account that ExponentialDecayLengthPenalty updates the score inplace, resulting in updates to base tested Tensor.
In addition, the gt assert had empty Tensors due to indexing along the batch dimension.
Test is currently expected to fail to show ExponentialDecayLengthPenalty issues with negative scores
* Fix ExponentialDecayLengthPenalty negative logits issue
In cases where the scores are negative, ExponentialDecayLengthPenalty decreases the score of eos_token_id instead of increasing it.
To fix this issue we compute the penalty of the absolute value and add it to the original score.
* Add examples for ExponentialDecayLengthPenalty
* Fix styling issue in ExponentialDecayLengthPenalty doc
* Apply suggestions from code review
Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>
* Style and quality fix
* Fix example outputs
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Co-authored-by: Arthur <48595927+ArthurZucker@users.noreply.github.com>
* Add epsilon- and eta-sampling.
Add epsilon- and eta-sampling, following the official code from https://github.com/john-hewitt/truncation-sampling and adapting to be more configurable, as required by Huggingface transformers.
* Add unit tests for epsilon- and eta-sampling.
* Black: fix code formatting.
* Fix docstring spacing.
* Clean up newlines.
* Fix implementation bugs and their associated tests.
* Remove epsilon- and eta-sampling parameters from PretrainedConfig.
* Clarify and clean up the documentation.
* Remove parameters for PretrainedConfig test.
* move generation_*.py src files into generation/*.py
* populate generation.__init__ with lazy loading
* move imports and references from generation.xxx.object to generation.object
