Skip to Main content Skip to Navigation
Theses

Modélisation et représentation de la connaissance pour la conception d'un système décisionnel dans un environnement informatique d'apprentissage en chirurgie

Abstract : The aim of our research is the design of a computer process that allows the production of adaptive feedback according to the diagnosis of learner's knowledge. The adaptive dimension is related to the knowledge point of view. We applied our model in a learning environment for professional domains.
In our framework, the diagnosis results of the learner's knowledge can be deduced only with a degree of uncertainty. For that, we chose to model the knowledge and the diagnosis with Bayesian Networks and to use decision theoretic approach to produce didactic decisions.
In our environment, the diagnosis of the learner's knowledge during the problem-solving process is realised by inference in Bayesian Network according to the tracks of learner's actions. The diagnosis results are used then in the decision process to produce adaptive feedback in four related steps: 1) the decision of the target of feedback that represents which knowledge will be designed to point; 2) the determination of the objective of feedback that represents from learning point of view what the aim of providing this feedback to learner; 3) the choice of feedback form; 4) the determination of the content of feedback.
We implemented the process of didactic decision-making in TELEOS (a computer learning environment dedicated to orthopedic surgery). Then, we tested and evaluate the behaviour of our model, the sensitivity of the best decision to small changes in the assigned probabilities and utilities, and the relevance of the produced feedback.
Document type :
Theses
Complete list of metadatas

Cited literature [9 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00380562
Contributor : Dima Mufti-Alchawafa <>
Submitted on : Sunday, May 3, 2009 - 10:56:50 AM
Last modification on : Thursday, November 19, 2020 - 12:59:40 PM
Long-term archiving on: : Thursday, June 10, 2010 - 8:34:26 PM

Identifiers

  • HAL Id : tel-00380562, version 1

Collections

Citation

Dima Mufti-Alchawafa. Modélisation et représentation de la connaissance pour la conception d'un système décisionnel dans un environnement informatique d'apprentissage en chirurgie. Informatique [cs]. Université Joseph-Fourier - Grenoble I, 2008. Français. ⟨tel-00380562⟩

Share

Metrics

Record views

674

Files downloads

3935