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Article

Diag-Skills: A Diagnosis System Using Belief Functions and Semantic Models in ITS

1
Computer Science Department, Université de Badji Mokhtar, Annaba 23000, Algeria
2
CNRS Heudiasyc UMR 7253, Université de Technologie de Compiègne, Alliance Sorbonne Université, 60200 Compiègne, France
3
Institut de Recherche en Informatique de Toulouse, Université de Toulouse 3, 31000 Toulouse, France
*
Authors to whom correspondence should be addressed.
Academic Editor: Enrico Vezzetti
Appl. Sci. 2021, 11(23), 11326; https://doi.org/10.3390/app112311326
Received: 19 October 2021 / Revised: 5 November 2021 / Accepted: 20 November 2021 / Published: 30 November 2021
(This article belongs to the Section Computing and Artificial Intelligence)
This work is related to the diagnosis process in intelligent tutoring systems (ITS). This process is usually a complex task that relies on imperfect data. Indeed, learning data may suffer from imprecision, uncertainty, and sometimes contradictions. In this paper, we propose Diag-Skills a diagnosis model that uses the theory of belief functions to capture these imperfections. The objective of this work is twofold: first, a dynamic diagnosis of the evaluated skills, then, the prediction of the state of the non-evaluated ones. We conducted two studies to evaluate the prediction precision of Diag-Skills. The evaluations showed good precision in predictions and almost perfect agreement with the instructor when the model failed to predict the effective state of the skill. Our main premise is that these results will serve as a support to the remediation and the feedbacks given to the learners by providing them a proper personalization. View Full-Text
Keywords: belief functions; diagnosis; technology-enhanced learning; tutoring systems; uncertainty belief functions; diagnosis; technology-enhanced learning; tutoring systems; uncertainty
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MDPI and ACS Style

Rahmouni, N.; Lourdeaux, D.; Benabbou, A.; Bensebaa, T. Diag-Skills: A Diagnosis System Using Belief Functions and Semantic Models in ITS. Appl. Sci. 2021, 11, 11326. https://doi.org/10.3390/app112311326

AMA Style

Rahmouni N, Lourdeaux D, Benabbou A, Bensebaa T. Diag-Skills: A Diagnosis System Using Belief Functions and Semantic Models in ITS. Applied Sciences. 2021; 11(23):11326. https://doi.org/10.3390/app112311326

Chicago/Turabian Style

Rahmouni, Nesrine, Domitile Lourdeaux, Azzeddine Benabbou, and Tahar Bensebaa. 2021. "Diag-Skills: A Diagnosis System Using Belief Functions and Semantic Models in ITS" Applied Sciences 11, no. 23: 11326. https://doi.org/10.3390/app112311326

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