* #46165

* #45752

* fix some doc bug test=document_fix (#45488)

* fix some doc bug test=document_fix

* fix some docs issues, test=document_fix

* beta -> \beta in softplus

* threshold -> \varepsilon in softplus

* parameter name

* delta -> \delta in smooth_l1_loss

* fix some docs test=document_fix

* fix docs test=document_fix

* fix docs && 增加空行 test=document_fix

* Update python/paddle/nn/functional/activation.py, test=document_fix

* Update python/paddle/nn/layer/activation.py, test=document_fix
Co-authored-by: NSigureMo <sigure.qaq@gmail.com>

* [docs] add ipustrategy Hyperlink (#46422)

* [docs] add ipustrategy Hyperlink

* fix ipu_shard_guard docs; test=document_fix

* [docs] add set_ipu_shard note

* [docs] fix hyperlink

* update framework.py

* fix mlu_places docs; test=document_fix

* fix put_along_axis docs; test=document_fix

* fix flake8 W293 error, test=document_fix

* fix typo in typing, test=document_fix
Co-authored-by: NLigoml <39876205+Ligoml@users.noreply.github.com>
Co-authored-by: NNyakku Shigure <sigure.qaq@gmail.com>

* #46659

* Update README_cn.md (#46927)

修复了错别字

* #46738

* fix paddle.get_default_dtype (#47040)

Chinese and English return values are inconsistent

* fix bug
Co-authored-by: N张春乔 <83450930+Liyulingyue@users.noreply.github.com>
Co-authored-by: NInfinity_lee <luhputu0815@gmail.com>
Co-authored-by: Nmrcangye <chenloong@88.com>
Co-authored-by: NSigureMo <sigure.qaq@gmail.com>
Co-authored-by: Ngouzil <66515297+gouzil@users.noreply.github.com>
Co-authored-by: NHamid Zare <12127420+hamidzr@users.noreply.github.com>
Co-authored-by: NSqhttwl <61459740+Sqhttwl@users.noreply.github.com>
Co-authored-by: NOccupyMars2025 <31559413+OccupyMars2025@users.noreply.github.com>
Co-authored-by: N超级码牛 <54444805+SuperCodebull@users.noreply.github.com>
Co-authored-by: Njzhang533 <jzhang533@gmail.com>

* only run pre-commit

* only run pre-commit

* fixed docs.

* Fixed docs. test=document_fix

code bak.

fixed docs. test=document_fix

* Revert to previous version of python/paddle/fluid/backward.py

* fixed bugs.

* test=document_fix. Fixed examples.

* move paddle.fleet to paddle.distributed.fleet

refactor fleet api under paddle.fleet
update DistributedStrategy

test=develop

* trainer auto wait pserver port ready

* add file

* fix docstring

* add option to not wait

* update api spec

* clean

* fix test hang