Never heard of it, but it looks interesting. My interpretation, not sure if correct, is that basically you're expressing each vote as a point in d-dimensional

Never heard of it, but it looks interesting. My interpretation, not sure if correct, is that basically you're expressing each vote as a point in d-dimensional Euclid space (where d is number of choices), and the result of the vote is the center of mass of all these points. Stated like this it perhaps makes more sense than just linear range voting.