Please use this identifier to cite or link to this item: https://doi.org/10.1142/S0219622005001489
Title: Making decisions in an intelligent tutoring system
Authors: Pek, P.-K.
Poh, K.-L. 
Keywords: Bayesian network
Decision analysis
Item selection
Student model
Issue Date: Jun-2005
Source: Pek, P.-K., Poh, K.-L. (2005-06). Making decisions in an intelligent tutoring system. International Journal of Information Technology and Decision Making 4 (2) : 207-233. ScholarBank@NUS Repository. https://doi.org/10.1142/S0219622005001489
Abstract: In computerized tutoring, the pace of instruction is related to the student's mastery levels of the learning objectives. The observable student's behavior that can be used to measure his knowledge is usually his responses to test items. Unobservable variables that are related to learner's motivation can affect learning but are difficult to quantify. In comparison with other decision-theoretic tutoring systems, the novelties of this research are: (1) the efficiency-centric approach to develop the Bayesian networks; (2) the formulation of utility values for different tutoring outcomes that are independent of past actions and to satisfy the separability condition; (3) the development of a common measure for student's mastery levels and item difficulties; and (4) the generation of optimal policies in polynomial time. A prototype web-based tutoring system, known as iTutor, incorporating the novelties has been developed for engineering mechanics. Formative evaluations of iTutor have shown encouraging results. © World Scientific Publishing Company.
Source Title: International Journal of Information Technology and Decision Making
URI: http://scholarbank.nus.edu.sg/handle/10635/63172
ISSN: 02196220
DOI: 10.1142/S0219622005001489
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

12
checked on Dec 7, 2017

WEB OF SCIENCETM
Citations

8
checked on Nov 22, 2017

Page view(s)

25
checked on Dec 10, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.