Investigation of Q-Learning in the Context of a
Virtual Learning Environment
Investigation of Q-Learning in the Context of a Virtual Learning Environment
Author(s): Dalia BaziukaitėSubject(s): Education
Published by: Vilniaus Universiteto Leidykla
Keywords: learning algorithms; reinforcement; convergence; virtual environment
Summary/Abstract: Abstract.We investigate the possibility to apply a knownmachine learning algorithmof Q-learning in the domain of a Virtual Learning Environment (VLE). It is important in this problem domain to have algorithms that learn their optimal values in a rather short time expressed in terms of the iteration number. The problem domain is a VLE in which an agent plays a role of the teacher.With time it moves to different states and makes decisions which regarding action to choose for moving from current state to the next state. Some actions taken are more efficient than others. The transition process through the set of states ends in a final (goal) state, one which provides the agent with the largest benefit possible. The best course of action is to reach the goal state with themaximum return available. This paper introduces a way of definition of a rewards matrix, which allows the maximum tolerance for the changes of a discounted reward value to be achieved. It also proposes way of an application of the Q-learning that allows a teaching policy to exist, which maps the situation in the learning environment.
Journal: Informatics in Education - An International Journal
- Issue Year: 6/2007
- Issue No: 2
- Page Range: 255-268
- Page Count: 14
- Language: English