"trial" or "study"

[yeknafar]

In one section of the document, the authors state: 'Creating a study typically involves choosing the hyperparameters that will vary across trials.'

Given that in each trial the hyperparameters remain constant, why do the authors refer to 'hyperparameters that will vary across trials'? Should this not be revised to 'hyperparameters that will vary across the studies' instead?

thank you.