TY - CHAP

T1 - Towards a Bayesian Student Model for Detecting Decimal Misconceptions

AU - Goguadze, Giorgi

AU - Sosnovsky, Sergey

AU - McLaren, Bruce

AU - Isotani, Seiji

N1 - Conference code: 19

PY - 2011

Y1 - 2011

N2 - This paper describes the development and evaluation of a Bayesian network model of student misconceptions in the domain of decimals. The Bayesian model supports a remote adaptation service for an intelligent tutoring system within a project focused on adaptively presenting erroneous examples to students. We have evaluated the accuracy of the student model by comparing its predictions to the outcomes of the interactions of 255 students with the software. Students' logs were used for retrospective training of the Bayesian network parameters. The accuracy of the student model was evaluated from three different perspectives: its ability to predict the outcome of an individual student's answer, the correctness of the answer, and the presence of a particular misconception. The results show that the model is capable of producing predictions of high accuracy (up to 87%).

AB - This paper describes the development and evaluation of a Bayesian network model of student misconceptions in the domain of decimals. The Bayesian model supports a remote adaptation service for an intelligent tutoring system within a project focused on adaptively presenting erroneous examples to students. We have evaluated the accuracy of the student model by comparing its predictions to the outcomes of the interactions of 255 students with the software. Students' logs were used for retrospective training of the Bayesian network parameters. The accuracy of the student model was evaluated from three different perspectives: its ability to predict the outcome of an individual student's answer, the correctness of the answer, and the presence of a particular misconception. The results show that the model is capable of producing predictions of high accuracy (up to 87%).

KW - Mathematics

KW - Bayesian networks

KW - Bayesian student modeling

KW - Student model evaluation

UR - http://www.scopus.com/inward/record.url?scp=84860476148&partnerID=8YFLogxK

M3 - Article in conference proceedings

SN - 978-616-12-0188-3

SP - 34

EP - 41

BT - Proceedings of the 19th International Conference on Computers in Education, ICCE 2011

A2 - Yu, Fu-Yun

A2 - Hirashima, Tsukasa

A2 - Supnithi, Thepchai

A2 - Biswas, Gautum

PB - Asia-Pacific Society for Computers in Education

CY - Chiang Mai

T2 - 19th International Conference on Computers in Education - ICCE 2011

Y2 - 28 November 2011 through 2 December 2011

ER -