Publication: Analysing the Advantages of Using Exploration and Exploitation Strategies in an Adaptive and Intelligent Educational System
Loading...
Identifiers
Publication date
2003-12-03
Defense date
Advisors
Tutors
Journal Title
Journal ISSN
Volume Title
Publisher
Junta De Extremadura. Consejería de Educación, Ciencia y Tecnología
Impact
Export
Abstract
One of the most important issues in Adaptive and Intelligent Educational Systems (AIES) is to define pedagogical strategies for tutoring studies according to their needs. In previous papers we have proposed to use a pedagogical knowledge representation based on a Reinforcement Learning (RL) model. Using the reinforcement learning model, the system is able to automatically learn which is the best pedagogical way to teach student individually based only on acquired experience other students with similar learning characteristics, like a human tutor does. In this paper we study the viability of the application of the RL model in a DataBase Design (DBD) AIES using in this study simulated students. The viability is measured on 1hree important issues. First, we are going to check that the system converges to a pedagogical policy when it interacts with simulated students with different leaming characteristics. Second, we are going to prove that tite system leans an optimal pedagogical strategy, measured in number of actions that the system must execute to teach all the contents to tbe student. And third, we are going to prove that the system does not need many students to leanr to teach optimally. Choosing a good exploration and exploitation strategy is determinant for the three elements defined above, so two typical exploration/exploitatíon policies in RL problems have been used for the experiments in order to analyze tbe differences between them when the system teaches simulated students: the e-greedy and the Boltzmann exploration strategies.
Description
Proceedings of: 2nd Intemational Conference on Multimedia and Infonnation & Communication Technologies in Education (m-ICTE2003) Badajoz, Spain, December 3-6th 2003
Keywords
Adaptive and intelligent educational systems, Reinforcement learning, Database design methodologies
Bibliographic citation
Méndez Villas, Antonio; Mesa González, José Antonio; Mesa González, Julián. Advances in Technology-based education: towards a knowledge-based society: Proceedings of 2nd Intemational Conference on Multimedia and Infonnation & Communication Technologies in Education: m-ICTE2003. Junta De Extremadura, Consejería de Educación, Ciencia y Tecnología, 2003, pp. 489-493. ISBN 84-96212-10-6 (vol. I)