A method for rating an entity includes receiving a bounded rating of the entity, selected from a bounded interval of integers; retrieving a bounded current rating for the entity selected from the bounded interval of integers; transforming the bounded rating into an unbounded rating by applying a functional transformation; then applying the same functional transformation to unbound the current rating; retrieving a reliability score for the rater; retrieving a reliability score for the current rating of the entity; computing a new unbounded rating as a weighted average of the entity's unbounded current rating and unbounded rating; computing a reliability score for the new unbounded rating by adding the rater's reliability score to the current rating's reliability score; and converting the new unbounded rating into a new bounded rating by applying an inverse of the functional transformation used to convert a bounded value into an unbounded value.