I want to say: We focused on X, using Y. Is it correct to put a comma before "using"?
I don't want to write We focused on X and used Y. because I find it ambiguous: it is unclear whether Y was done to achieve X, or Y was done in addition to X.
I don't want to write We focused on X using Y. because it is then unclear whether I used Y myself, or simply that I was interested in "X using Y".
Example: We focused on patient outcome prediction, using dynamic Bayesian networks to model patients' progression throughout their stay in the ICU.