During the Task 4 of the qwiklab "Predict Bike Trip Duration with a Regression Model in BQML 2.5", the BigQuery ML model is updated to use the TRANSFORM clause.
My understanding is that TRANSFORM clause simplifies the prediction query, because the transformations are defined during model creation and it is not needed to write them again during prediction or evaluation.
I compared the model metrics before and after introducing the TRANSFORM clause and they are different. I thought the TRANSFORM clause doesn't affect the model performance.
Could someone kindly explain this to me?
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