What's the usage of `event_to_attr`

❓ Questions/Help/Support

Hi @vfdev-5 ,

I see there is a dict property event_to_attr in State: https://github.com/pytorch/ignite/blob/master/ignite/engine/events.py#L374 And users can register new event-to-attr “mapping” in engines. But I didn’t find the usage of this property, may I know why you defined this dict and what the usage case it is for?

In my simple mind, maybe “register events” and “register attributes” can be 2 independent features of State? I didn’t see the relationship between “event names” and “attributes” of State. I am enabling it in MONAI and Clara workflows, users use custom events and attributes to share data between handlers.

Thanks in advance.

[Nic-Ma]

Hi @vfdev-5 ,

Thanks for your sharing, a very cool online tool. NVIDIA Clara is based on MMAR standard archive and JSON configs, many users are not programmers. https://docs.nvidia.com/clara/tlt-mi/nvmidl/model.html# The new version that is based on MONAI & ignite is not released yet. Maybe we can leverage your application in the future.

Thanks.

[Nic-Ma]

Hi @vfdev-5 ,

Thanks for your example, makes sense. As Clara users usually use JSON config to develop DL pipeline, we highlight “event-handlers” as the main approach to bring their own python code. So “register events”, “register attrs”, “end-to-end context dict data” would 3 most important features to construct a flexible program based on ignite handlers.

Thanks.