Yep! My problem at the time was that I didn't know I needed a matrix, or which operations would be helpful to perform on one, because I didn't know much about t

Yep! My problem at the time was that I didn't know I needed a matrix, or which operations would be helpful to perform on one, because I didn't know much about the problem I was trying to solve. I ran into a paper about using SVD on networks of resistors to simplify them, which pointed me in the right direction.