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Auflistung nach Schlagwort "Vagueness"

1 - 3 von 3
  • Zeitschriftenartikel
    Decidability and Complexity of Fuzzy Description Logics
    (KI - Künstliche Intelligenz: Vol. 31, No. 1, 2017) Baader, Franz; Borgwardt, Stefan; Peñaloza, Rafael
    Fuzzy description logics (FDLs) have been introduced to represent concepts for which membership cannot be determined in a precise way, i.e., where instead of providing a strict border between being a member and not being a member, it is more appropriate to model a gradual change from membership to non-membership. First approaches for reasoning in FDLs where based either on a reduction to reasoning in classical description logics (DLs) or on adaptations of reasoning approaches for DLs to the fuzzy case. However, it turned out that these approaches in general do not work if expressive terminological axioms, called general concept inclusions (GCIs), are available in the FDL. The goal of this project was a comprehensive study of the border between decidability and undecidability for FDLs with GCIs, as well as determining the exact complexity of the decidable logics. As a result, we have provided an almost complete classification of the decidability and complexity of FDLs with GCIs.
  • Zeitschriftenartikel
    Fuzzy-Systeme – Positive Aspekte der Unvollkommenheit
    (Informatik-Spektrum: Vol. 19, No. 1, 1996) Kruse, Rudolf
    Fuzzy-Systeme erfreuen sich wegen der vielfältigen Anwendungsmöglichkeiten im industriellen Umfeld einer wachsenden Popularität, wohingegen im Bereich der Forschung Fuzzy-Techniken immer noch äußerst kritisch beäugt werden. Ein Grund dafür liegt darin, daß viele Mißverständnisse bezüglich der Methodik der Fuzzy-Systeme sowie der eigentlichen Zielsetzung beim Einsatz von Fuzzy-Systemen bestehen. Das Ziel dieses Aufsatzes ist es daher, einige Mißverständnisse aufzuklären, grundlegende Fuzzy-Techniken zu erläutern und die zur Zeit am stärksten diskutierten Einsatzgebiete sowie Neuro-Fuzzy-Systeme vorzustellen.Summary Due to numerous possible application fields, fuzzy systems enjoy increasing popularity. On the other hand, from the viewpoint of research, some criticism on fuzzy techniques is still pending. A reason for it lies in several misunderstandings concerning the methodology of fuzzy systems and the primar objectives of using them in practice. The aim of this paper is to clarify these misunderstandings, to introduce basic fuzzy techniques, and to present their currently most important application areas a well as neural fuzzy systems.
  • Zeitschriftenartikel
    Many Facets of Reasoning Under Uncertainty, Inconsistency, Vagueness, and Preferences: A Brief Survey
    (KI - Künstliche Intelligenz: Vol. 31, No. 1, 2017) Kern-Isberner, Gabriele; Lukasiewicz, Thomas
    In this paper, we give an introduction to reasoning under uncertainty, inconsistency, vagueness, and preferences in artificial intelligence (AI), including some historic notes and a brief survey to previous approaches.