Título: Ontological Engineering and its Applications (emphasis in Educational Contexts) Palestrante: Seiji Isotani Department of Knowledge Systems ISIR, Osaka University, Japan http://www.ei.sanken.osaka-u.ac.jp/~isotani Data: 3/11/2008, 14h30 Local: Sala 03B, IME-USP Resumo: In recent years, with the increasing use of technology, Artificial Intelligence has been gradually and successfully introduced into a variety of systems (including educational ones). However, major challenges still remain. Among these, we are interested in how to represent the knowledge of intelligent authoring systems and then how to use this knowledge efficiently. Usual approaches to such issues provide their systems with a kind of expertise using a set of heuristics and domain theories built-in the procedures (programming languages). This means that the programmers, not the systems, have an understanding about the knowledge being used. To deal with this problem, we will show some of the efforts the ontology engineering community has been done in order to create better intelligent systems. First of all, we will try to create a basic common understanding about the difference between heavy- and light-weight ontologies. Then, we will explain the research being done in Japan to define heavy-weight ontologies that support the development of intelligent systems. Finally, we will present the development of an ontology for Education used to support collaborative learning and its results to (a) produce semantically-enabled intelligent systems; and (b) help instructors to design effective collaboration in real scenarios.