Jorge Pais

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We consider some issues concerning the role of Formal Logic in Software Engineering education, which lead us to promote the learning of formal proof through extensive, appropriately guided practice. To this end, we propose to adopt Natural Deduction as proof system and to make use of an adequate proof assistant to carry out formal proof on machine. We(More)
In this paper, we introduce a novel pictorial approach for solving problems in n-dimensional Euclidean spaces called the n-dimensional projective approach. The projective approach is based on a hierarchical and modular architecture, where its ground module is rooted on geometrical concepts. The result is an effective and consistent spatial approach able to(More)
This paper presents a semi-optimal heuristic search algorithm called N-Best, which is both a functional extension and a simpler implementation of the First-Best Algorithm (the N-Best algorithm with N=1) presented in [1]. Certain real-world problems particularly those that are tackled by planners in Qualitative Reasoning need the construction of models with(More)
Canarian Black (CB) pigs belong to an autochthonous and endangered breed, which is spread throughout the Canarian archipelago. It is commonly accepted that they represent a relic of the pig populations that were bred by the Berbers in North Africa over millennia. It is important to note that the geographic isolation of the Canary Islands has preserved this(More)
In this paper, we describe the n-dimensional projective approach as a hierarchical and modular architecture with a processing mechanism that underlies both spatial backtracking and multiple physical properties of entities. Also, it is shown in Euclidean space how cognitive activities of an agent are improved in terms of flexibility (e.g. alternative(More)