Skeleton based action recognition

[negarhdr]

This PR adds two learners (which train and evaluate a baseline model and three proposed models) for skeleton-based human action recognition.

• A new data type named SkeletonSequence is added to the engine.data.py and a new target class named ActionCategory is added to engine.target.py.

• The learners' implementation follows the provided template and sufficient tests are provided for all the functions which will be directly called by the user including, fit(), eval(), infer(), save(), load(), optimize(), multi_stream_eval(), network_builder().

[passalis]

This PR seems fine, nice work! One comment: Please check if separate model is saved into a separate folder (e.g., if a model if named "test_model", then a folder with name "test_model" should be created and all relevant files should exist within this folder).

[negarhdr]

Failing again even when I disable all the other tests. I think it might be a memory issue on this server, not sufficient RAM memory, or garbage collector's inconsistency.

[stefaniapedrazzi]

Please resolve the conflicts and update to master to check if the new testing system is fixing the test errors.
You also have to add the test skeleton_based_action_recognition in this list:
https://github.com/tasostefas/opendr_internal/blob/7496b7356fd492b0fb9c9ba2e81111e95aac8140/.github/workflows/tests_sources.yml#L66

[negarhdr]

Please resolve the conflicts and update to master to check if the new testing system is fixing the test errors.
You also have to add the test skeleton_based_action_recognition in this list:
https://github.com/tasostefas/opendr_internal/blob/7496b7356fd492b0fb9c9ba2e81111e95aac8140/.github/workflows/tests_sources.yml#L66

@stefaniapedrazzi when I update the opendr_internal/.github/workflows/tests_sources.yml file, the Push is rejected!
Isn't it the case that this file can only be modified by code owners?

[stefaniapedrazzi]

@stefaniapedrazzi when I update the opendr_internal/.github/workflows/tests_sources.yml file, the Push is rejected!
Isn't it the case that this file can only be modified by code owners?

It would be very helpful to also see the log you receive when the push is rejected.
I don't think that only code owners can modify it, but I'm not an administrator of this repository so I cannot check the settings.
How do you perform the git actions? Directly from a terminal or using some applications?
If you are using an application, could you please try directly from a terminal?

[passalis]

I think that the file can be edited by anyone (e.g., Lukas is not a codeowner and he edited this file). Can you provide more details regarding the reject? Please also check that you editing the file on your branch and not in the master branch.

[negarhdr]

@stefaniapedrazzi , @passalis: Problem is solved. It was related to my personal access token.
All the tests are passed and the branch is ready to be merged.

[stefaniapedrazzi]

Could you please also update the documentation index by adding your newly added documentation page?
https://github.com/tasostefas/opendr_internal/blob/master/docs/reference/index.md

Otherwise now everything is fine for me.

[negarhdr]

Could you please also update the documentation index by adding your newly added documentation page?
https://github.com/tasostefas/opendr_internal/blob/master/docs/reference/index.md

Otherwise now everything is fine for me.

@stefaniapedrazzi Index.md is updated.

[stefaniapedrazzi]

Thank you!

[passalis]

Thank you!