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Representing Temporal and Factual Uncertainty

  • P. Chountas
  • I. Petrounias
Conference paper
Part of the Advances in Soft Computing book series (AINSC, volume 7)

Abstract

The task of an information system is the representation and management of indicative information from multiple sources describing the state of some enterprise. Most snapshot database models represent enterprises that are crisp where all relationships are fixed, and all attributes are atomic valued. In temporal databases, approaches are dealing mainly with precise absolute times. Very few approaches deal with imprecise absolute times or with infinite absolute times. No consideration has been given to imprecise infinite times. Many algebraic models are dealing with temporal or value imperfection, with no description of the semantics of uncertain information. This paper suggests an application independent conceptual framework describing the semantics of temporal and incomplete information and translates this to database representation.

Keywords

Entity Type Relation Schema Fact Type Factual Uncertainty Probability Interval 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • P. Chountas
    • 1
  • I. Petrounias
    • 1
  1. 1.Department of ComputationUMISTManchesterUK

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