* [Feature]: Add Part3 of Hooks

* [Feature]: Add Hook

* [Fix]: Add docstring and type hint for base hook

* [Fix]: Add test case to not the last iter, inner_iter, epoch

* [Fix]: Add missing type hint

* [Feature]: Add Args and Returns in docstring

* [Fix]: Add missing colon

* [Fix]: Add optional to docstring

* [Fix]: Fix docstring problem

* [Fix]:typo

* [Fix]: Fix lint

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* add mmddp

* update

* update code

* update unittest

* fix comment

* add user doc of distributed primitives

* resolve comments

* update

* Mock unimplemented modules and fix unit tests

* add a comment

* add evaluator docs

* resolve comments

* resolve comments

* [Feature]: Add evaluator base class.

* solve comments

* update

* fix

* [WIP] abstract-data-structure

* update docs

* update

* update BaseDataSample

* fix comment and coverage 100%

* update and add _set_field

* update

* split  into base_data_element and base_data_sample

* update

* update

* update

* fix typo

* Fix BaseDataset docs

* Fix basedataset doc

* basedataset first commit

* add base dataset

* add dataset

* add basedataset

* Fix test dataset

* Fix mypy and test

* Fix mypy and test

* remove unused code

* Update mmengine/dataset/base_dataset.py

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* Update mmengine/dataset/base_dataset.py

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* add more corner cases in unittest

* fix lint

* Fix as comment

* Fix lint

* update unitest

* Type hint Dick to dict

* rename max_refetch

* Fix as comment

* Fix typo

* Fix as comment

* BaseDataset is no more an abstrac Class, change UT and docs

* Fix as comment

* Fix as comment and refactor type error

* Add comment for full init

* Fix as comment and modify dataset_wrapper

* Fix as comment and modify dataset_wrapper

* Fix as comment

* Fix as comment

* Fix as comment

* Fix as comment

* Fix as comment

* Fix as comment

* Fix as comment

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* add visualizer unittest

* update

* fix comment

* fix commit

* fix comment

* fix comment

* Add DefaultSampler and InfiniteSampler

* Add unit test

* Add samplers to API reference

* Update docstring

* Improve according to comments

* Rename `num_replicas` to `world_size`

* Update docstring.

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* Update mmengine/data/sampler.py

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* Fix typo in unit test

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* [Feature]: Add optimzier and constructor.

* refactor unit tests

* add optimizer doc

* add parrots wrapper

* add parrots wrapper

* solve comments

* resolve comments

* add visualizer

* update

* update

* update

* update

* update

* fix lint

* fix commit

* fix commit

* fix commit

* fix commit

* refine

* refine

* update

* update

* update

* update

* update

* add config test

* Fix typo

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* Update tests/config/test_config.py

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* Reconstruct config test

* Fix import logic and error test

* Fix path error

* Restructuring Config

* simplify test logic

simplify test logic

* add config

* [Feature] Add Config

* fix lint

* remove test_config

* cancel change to pre-commit yaml

* solve conflict

* fix comments

* merge main

* fix lint

* update

* remove some magic docs

* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* add deprecation test

* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* Update mmengine/config/config.py

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* update

* fix mypy

* fix lint

* fix super

* improve ut coverage

* add test dump

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* add config test

* Fix typo

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* Update tests/config/test_config.py

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* Reconstruct config test

* Fix import logic and error test

* Fix path error

* Restructuring Config

* simplify test logic

simplify test logic

* rename test_config file

* add test complex dump and pretty text

* adjust test sequence according to comment

adjust test sequence according to comment

* add comment and test for simple.config.py

* add config test data

* add init

* remove __pycache__

* fix as comment

* add syntax test case

* remove tmp path and modify comment

* add test for setattr

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* [Feature]: Add parameter schedulers.

* update

* update

* update

* update

* add docstring to lr and momentum

* resolve comments

* add unit tests of data abstract interface

* update

* update

* update docs of data element

* a draft of UT of datasample, to be finished

* update datasample test

* updata

* update

* fix comments

* fix comments

* fix comments

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* tmp

* add scheduler unit test

* disable yapf

* add more test

* add more test

* not use torch test case

* solve comments

* update file

* add more unit tests

* resolve comments

* update cosine ut

* fix typo

* solve comments

* solve comments

* resolve comments

* move fileio directory from utils

* remove CephBackend from fileio and clear some deprecated docstring

* fix format

* fix a spellling error

* tmp commit

* add unittest for basedataset

* fix lint

* resolve all comments

* update

* update

* update

* update

* update

* update

* update

* resolve comments

* resolve comments

* update

* resolve comments

* resolve comments

* Add the unittest of registry

* improve the format

* fix the test_repr

* refactor the test_init

* add the copyright for tests directory

* add more unit tests

* fix error

* add unit tests for _search_child and _get_root_registry

* build_from_cfg supports dict, ConfictDict and Config

* improve docstring

* [Docs] Configure the documentation

* fix the format

* introduce the usage of default_scope

* add Chinese documentation

* move docs configure to another pr

* clean pr

* refactor registry docs

* fix typo

* fix typo

* reorg

* add more examples

* reslove comments

* reslove comments

* reslove comments

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* add docs for BaseDataset

* update docs

* update docs

* update basedataset.md

* resolve all comments

* update

* update

* refine base dataset doc

* resolve all comments

* update

* update

* update

* update

* update

* update

* update

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* tmp add fileio

* ignore fileio mypy check error

* update isort

* update

* update comments

* update

* update

* update

* fix bug in use cases

* resolve all comments

* add description of basedatasample

* rename meta_info to metainfo as meta is an adj.

* update

* resolve comments

* clean set data

* finished doc

* rephrase

* update

* resolve comments

* more clear organization

* rephrase

* rephrase

* replace 基础数据元素 by 数据元素

* rephrase

* [Doc] Add scheduler user doc.

* reslove comments

* add chinese doc

* add update en doc

* resolve comments

* resolve comments

* update parameter scheduler

* resolve comments

* tmp remove en doc

* resolve comments

* resolve comments

* resolve comments

Co-authored-by: Kai Chen <chenkaidev@gmail.com>

* [Docs] Configure the documentation

* delete mypy.ini

* add config user doc

* add config user doc

* Fix typo

* fix typo

* reference mmcv

* fix typo

* fix typo

* Restructuring config.md

* Update introduction

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* Fix

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* Update docs/zh_cn/tutorials/config.md

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* Fix title level

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* refactor the doc

* remove **bold** on titles

* Fix python comment

* Fix python comment

* Update docs/zh_cn/tutorials/config.md

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Co-authored-by: Kai Chen <chenkaidev@gmail.com>
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