I seem to remember seeng this described, but can’t find its name or any references to it:
It’s got scored ballot, a la STAR voting (0-5 stars).
First, normalize all ballots, so that there is one candidate with 0 stars and one with 5 stars. (if impossible because all candidates have the same number of stars, just leave them alone) This means ballots can have fractional stars.
Then eliminate the candidate with the lowest average.
Now continuously loop, normalizing and eliminating, until one candidate remains. Normalizing is needed on each loop to account for eliminated candidates.