* add vis lr
* add doc
* Update doc and rm load_json_log in analysis
* Update docs
* add unit tests and update docstring
* fix unit-tests
* Use DummyIterBasedRunner and DummyEpochBasedRunner to simulate training
process.
* rm function val and add judge
* update docs
* improve english expression
* Update docs/tools/visualization.md
Co-authored-by: Ma Zerun <mzr1996@163.com>
* fix typo and ImageNet datasize
* fix typo
* update example
Co-authored-by: mzr1996 <mzr1996@163.com>
Ezra-Yu