作者
Minija Tamosiunaite, Bojan Nemec, Ales Ude, Florentin Wörgötter
发表日期
2011/7/12
期刊
Robotics and Autonomous Systems
卷号
59
期号
11
页码范围
910-922
出版商
North-Holland
简介
When describing robot motion with dynamic movement primitives (DMPs), goal (trajectory endpoint), shape and temporal scaling parameters are used. In reinforcement learning with DMPs, usually goals and temporal scaling parameters are predefined and only the weights for shaping a DMP are learned. Many tasks, however, exist where the best goal position is not a priori known, requiring to learn it. Thus, here we specifically address the question of how to simultaneously combine goal and shape parameter learning. This is a difficult problem because learning of both parameters could easily interfere in a destructive way. We apply value function approximation techniques for goal learning and direct policy search methods for shape learning. Specifically, we use “policy improvement with path integrals” and “natural actor critic” for the policy search. We solve a learning-to-pour-liquid task in simulations as well as …
引用总数
2012201320142015201620172018201920202021202220232024691397101414139953
学术搜索中的文章