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* wip

* wip

* wip

* wip

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* uncomment

* uncomment

* wip

* updates

* add docstring

* updates

* fix arg

* fixes

* add unit tests

* update readme

* update readme

* update finetune script

* update test

* add test

* add ray to test dependencies

* separate ray and ray tune

* formatting

* shutdown ray at end of test

* fix tests

* formatting

* formatting

* even more formatting

* address comments

* formatting

* add files

* Update examples/research_projects/rag/test_distributed_retriever.py
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* address comments

* addressing comments
Co-authored-by: Ubuntu <ubuntu@ip-172-31-21-208.us-west-2.compute.internal>
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* Add new run_swag example

* Add check

* Add sample

* Apply suggestions from code review
Co-authored-by: Lysandre Debut <lysandre@huggingface.co>

* Very important change to make Lysandre happy
Co-authored-by: Lysandre Debut <lysandre@huggingface.co>

* Reorganize example folder

* Continue reorganization

* Change requirements for tests

* Final cleanup

* Finish regroup with tests all passing

* Copyright

* Requirements and readme

* Make a full link for the documentation

* Address review comments

* Apply suggestions from code review
Co-authored-by: Lysandre Debut <lysandre@huggingface.co>

* Add symlink

* Reorg again

* Apply suggestions from code review
Co-authored-by: Thomas Wolf <thomwolf@users.noreply.github.com>

* Adapt title

* Update to new strucutre

* Remove test

* Update READMEs
Co-authored-by: Lysandre Debut <lysandre@huggingface.co>
Co-authored-by: Thomas Wolf <thomwolf@users.noreply.github.com>