You can fine-tune Transformer hyperparameters by using a Bayesian optimizer like Optuna to efficiently search the hyperparameter space.
Here is the code snippet below:

In the above code we are using the following key points:
- 
Optuna’s trial object to sample hyperparameters like learning rate, batch size, epochs, and weight decay.
 
- 
Hugging Face Trainer API to easily manage training and evaluation.
 
- 
IMDB dataset as a sample text classification task.
 
Hence, this allows efficient and intelligent exploration of hyperparameters to improve model performance with minimal manual tuning.