* Disable warning of subprocess launched by dataloader

* Add type hint

* Fix the document link

* Update mmengine/dataset/base_dataset.py

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

* dataset tutorial abstract

* complete dataloader & dataset tutorial

* minor fix

* minor fix

* resolve comments

* rename some link to be more specific

* add warning to manually constructed sampler

* fix as comments

* [Fix] Fix docstring of BaseDataset

* minor refine

* [Fix] Fix ConcatDataset error in VOCDataset

* minor fix

* minor fix

* minor fix

* add UT

* minor fix

* minor fix

* minor fix

* Update mmengine/dataset/dataset_wrapper.py

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

* minor fix

* Update mmengine/dataset/dataset_wrapper.py

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

* [Refactor]: modify interface of Visualizer.add_datasample (#365)

* [Refactor] Refactor data flow: refine `data_preprocessor`. (#359)

* refine data_preprocessor

* remove unused BATCH_DATA alias

* Fix type hints

* rename move_data to cast_data

* [Refactor] Refactor data flow: collate data in `collate_fn` of `DataLoader`  (#323)

* acollate data in dataloader

* fix docstring

* refine comment

* fix as comment

* refactor default collate and psedo collate

* foramt test file

* fix docstring

* fix as comment

* rename elem to data_item

* minor fix

* fix as comment

* [Refactor] Refactor data flow: `data_batch` argument of `Evaluator.process is a `dict` (#360)

* refine evaluator and metric

* compatible with new default collate

* replace default collate with pseudo

* Handle data_batch in metric

* fix unit test

* fix unit test

* fix unit test

* minor refine

* make data_batch optional

make data_batch optional

* rename outputs to predictions

* fix ut

* rename predictions to outputs

* fix docstring

* fix docstring

* fix unit test

* make outputs and data_batch to kwargs

* fix unit test

* keep signature of metric

* fix ut

* rename pred_sample arguments to data_sample(Visualizer)

* fix loop and ut

* [refactor]: Refactor model dataflow (#398)

* [Refactor] Refactor data flow: refine `data_preprocessor`. (#359)

* refine data_preprocessor

* remove unused BATCH_DATA alias

* Fix type hints

* rename move_data to cast_data

* refactor model data flow

tmp_commt

tmp commit

* make val_cfg and test_cfg optional

* roll back runner

* pass test mmdet

* fix as comment

fix as comment

fix ci in DataPreprocessor

* fix ut

* fix ut

* fix rebase main

* [Fix]: Fix test val ddp (#462)

* [Fix] Fix docstring and type hint of data flow (#463)

* Fix docstring of data flow

* change signature of hook

* fix unit test

* resolve conflicts

* fix lint

* Rename data to structure

* adjust the way to import module

* adjust the way to import module

* rename Structure to Data Structures in docs api

* rename structure to structures

* support using some modules of mmengine without torch

* fix circleci config

* fix circleci config

* fix registry ut

* minor fix

* move init method from model/utils to model/weight_init.py

* move init method from model/utils to model/weight_init.py

* move sync_bn to model

* move functions depending on torch to dl_utils

* format import

* fix logging ut

* add weight init in model/__init__.py

* move get_config and get_model to mmengine/hub

* move log_processor.py to mmengine/runner

* fix ut

* Add TimeCounter in dl_utils/__init__.py

* [Enhance] Allow Compose(None)

* add typehint

* fix

* fix cbds

* fix

* refine data_root and data_prefix params

* modify unittest

* rename datalist and support load ceph

* rename datalist and support load ceph

* remove check disk file path in _load_metainfo

* fix rename error

* fix rename error

* unit test error

* fix rename error

* remove unnecessary code

* fix lint

* implement parse_data_info

* add unit test

* fix join prefix of ann_file

* fix docstring

* register dataset wrapper

* fix as comment

* refactor docs of basedataset

* fix ci

* fix comments

* fix comments

* fix comments

* fix comments

* fix comments

* set default value of ann_file to ''

* fix comments

* add get_subset method, add comment, rename variable

* add unit test

* Please mypy

* Fix as comment, support negative index, and fix index access error

* add and refine docstring, handle indices=0

* handle indices=0

* add empty list indices test

* rename in_meta in docstring and comments to in_metainfo

* clean meta nameing

* Fix negative indices error

* test empty list of get_subset

* fix comments and docstring

* add unit test

* Fix as comment

* Fix as comment

* add docstring to mention wrapped dataset should not inherit from Basedataset

* Fix wrapped dataset docstring

* Fix wrapped dataset docstring

* Fix method name, docstring, and comments

* Fix comments

* Fix comments

* Fix comments

* 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

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

* Update mmengine/dataset/base_dataset.py

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

* 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

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>
Co-authored-by: Tao Gong <gongtao950513@gmail.com>