Title
Leveraging Human Knowledge in Tabular Reinforcement Learning: A Study of Human Subjects.
Abstract
Reinforcement Learning (RL) can be extremely effective in solving complex, real-world problems. However, injecting human knowledge into an RL agent may require extensive effort and expertise on the human designeru0027s part. To date, human factors are generally not considered in the development and evaluation of possible RL approaches. In this article, we set out to investigate how different methods for injecting human knowledge are applied, in practice, by human designers of varying levels of knowledge and skill. We perform the first empirical evaluation of several methods, including a newly proposed method named SASS which is based on the notion of similarities in the agentu0027s state-action space. Through this human study, consisting of 51 human participants, we shed new light on the human factors that play a key role in RL. We find that the classical reward shaping technique seems to be the most natural method for most designers, both expert and non-expert, to speed up RL. However, we further find that our proposed method SASS can be effectively and efficiently combined with reward shaping, and provides a beneficial alternative to using only a single speedup method with minimal human designer effort overhead.
Year
DOI
Venue
2018
10.24963/ijcai.2017/534
international joint conference on artificial intelligence
DocType
Volume
Citations 
Journal
abs/1805.05769
1
PageRank 
References 
Authors
0.38
20
3
Name
Order
Citations
PageRank
Ariel Rosenfeld18713.03
Matthew E. Taylor2135294.88
Sarit Kraus36810768.04