Can the CPC classification be used to create a dataset that can then be used as a training set?

https://www.epo.org/en/service-support/faq/can-cpc-classification-be-used-create-dataset-can-then-be-used-training-set

Can the CPC classification be used to create a dataset that can then be used as a training set?

Participants are free to draw upon all forms of established classification, including IPC/CPC/Y02, etc., that are considered useful to developing creative and reliable AI models for automating the identification of patent and non-patent literature related to “green plastics”.