Ultimate Intelligence Part III: Measures of Intelligence, Perception and
  Intelligent Agents
  We propose that operator induction serves as an adequate model of perception.
We explain how to reduce universal agent models to operator induction. We
propose a universal measure of operator induction fitness, and show how it can
be used in a reinforcement learning model and a homeostasis (self-preserving)
agent based on the free energy principle. We show that the action of the
homeostasis agent can be explained by the operator induction model.
