Continuous Value Iteration (CVI) Reinforcement Learning and Imaginary
  Experience Replay (IER) for learning multi-goal, continuous action and state
  space controllers
  This paper presents a novel model-free Reinforcement Learning algorithm for
learning behavior in continuous action, state, and goal spaces. The algorithm
approximates optimal value functions using non-parametric estimators. It is
able to efficiently learn to reach multiple arbitrary goals in deterministic
and nondeterministic environments. To improve generalization in the goal space,
we propose a novel sample augmentation technique. Using these methods, robots
learn faster and overall better controllers. We benchmark the proposed
algorithms using simulation and a real-world voltage controlled robot that
learns to maneuver in a non-observable Cartesian task space.
