weighter

noun

1. One who weights or assigns a weighting.

   “Thus, for example, if i assigns j a weight of 0.3 as a weighter of weighters of others in the group, it is reasonable to suppose that if i asks himself what weight to assign to j at the next level as a weighter of weighters of weighters of members of the group, he will have no new information and again assign j a weight of 0.3 as he did at the previous level.”