# Tranformers Trainer API

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**Category:** Intermediate\
**Created:** [November 25, 2024, 6:30am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Ftranformers-trainer-api%2F127564 "2024-11-25T06:30:42Z")\
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**Author:** ![fahad0521](https://avatars.discourse-cdn.com/v4/letter/f/e9a140/32.png) [@fahad0521](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Ffahad0521)%5C
**Post date:** [November 25, 2024, 6:30am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Ftranformers-trainer-api%2F127564%2F1 "2024-11-25T06:30:42Z")

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does the **trainer** class for the transformer we use to pass the arguments  
in that does both **training** and **validation** uses same **forward class** means that both traind and validation uses the **teacher forcing**?  
can some one explain this?  
thanks