Luís Descalço

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In this paper, we describe the integration and evaluation of an existing generic Bayesian student model (GBSM) into an existing computerized testing systemwithin the Mathematics Education Project (PmatE Projecto Matemática Ensino) of the University of Aveiro. This generic Bayesian student model had been previously evaluated with simulated students, but a(More)
In this paper we give a description of all subsemigroups of the bicyclic monoid B. We show that there are essentially five different types of subsemigroups. One of them is the degenerate case, and the remaining four split in two groups of two, linked by the obvious anti-isomorphism of B. Each subsemigroup is characterized by a certain collection of(More)
We have implemented a Web application reusing questions from two computer systems, true/false questions from PmatE (Projeto Matemática Ensino) and multiple choice questions from Megua (Mathematics Exercise Generator, University of Aveiro). Our application implements a Bayesian user model for diagnosing student knowledge in the topics covered. In(More)
Learning mathematics requires students to work in an independent way which is particularly challenging for such an abstract subject. Advancements in technology and, taking the student as the focus of his own learning, led to a change of paradigm in the design and development of educational contents. In this paper we describe the first experience with an(More)
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