When using Standardize in H2O on New Data

Question

I am curious to know that when using the Standardised feature in a H2O model in R how does it work when scoring out new data.

I know that when it standardises on a training set is sets the mean to 0 and standard deviation to 1 based on the mean and standard deviation of the training data but what does it do with new data?

Does it standardise based on the training data mean and standard deviation or does it standardise based on the new data being scored?

Answer 1

The score function applies the same mapping used to standardize the training data to the test dataset. This is handled automatically by H2O.