[Bug]: How to train from scratch？

[sankexin]

Is there an existing issue ? / 是否已有相关的 issue ?

• [X] I have searched, and there is no existing issue. / 我已经搜索过了，没有相关的 issue。

Describe the bug / 描述这个 bug

it is a good project! but , How to train from scratch？When can we git code for scratch train?

To Reproduce / 如何复现

How to train from scratch？

Expected behavior / 期望的结果

How to train from scratch？

Screenshots / 截图

How to train from scratch？

Environment / 环境

How to train from scratch？

Additional context / 其他信息

How to train from scratch？