Proposta de um sistema hipermídia adaptativo educacional para a personalização do processo de ensino atraves da web
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2011-12-13
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Universidade Federal de Goiás
Resumo
Nowadays, e-learning has become an important source of knowledge, providing content
without the limitation of time or space. In this context, Web-based education became
an important sector. A large number of e-learning applications have utilized the Web to
teach, mainly to provide distance learning. As a result of the substantial growth in elearning
there has been an increase in the diversity of students that uses this environment
to achieve their academic or professional backgrounds. In general, these students have
di erent personal, social-cultural and cognitive characteristics. Adaptive Hypermedia Systems
provide resources to assist this diverse public, they are able to consider the individual
characteristics of students during the learning process. It is known that the representation
of these features are often associated with uncertain and imprecise information. Given
this context, this work proposes a Web-based Adaptive Educational Hypermedia System
(with instructional content) that aims to personalize the process of distance learning. It
has a student model that is able to represent the uncertainties related to the student's
knowledge (characteristic of the students considered by the system) through the use of a
Bayesian Network. This model is adjusted according to the answers provided by students
in ability tests, which in turn are evaluated by a mathematical model of Item Response
Theory. The experiment realized compared the results obtained by the proposed system,
that is provided with adaptation (personalization) mechanisms, and other system that has
no such mechanisms, in which the same content was presented to all the students. Statistical
analysis of the collected data has shown a signi cant improvement in knowledge
retention by the students who used the system provided with adaptation. However, it
was expected, as a result of this improvement, that the levels of satisfaction reported
by the students who used the proposed system were better than the levels reported by
the students who used the system without adaptation, which was not evidenced by the
gathered data.
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BUENO, A., M. F. Proposta de um sistema hipermídia adaptativo educacional para a personalização do processo de ensino através da web. 2011. 139 f. Dissertação (Mestrado em Engenharia Elétrica e da Computação) - Universidade Federal de Goiás, Goiânia, 2011.