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Issue:Representation of null values with the aid of H-IFS

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Title of paper: Representation of null values with the aid of H-IFS
Author(s):
Panagiotis Chountas
HSCS – University of Westminster, London, HA1 3TP, UK
chountp@wmin.ac.uk
Published in: "Notes on IFS", Volume 13 (2007) Number 1, pages 20—33
Download:  PDF (276  Kb, Info)
Abstract: Here, we present a way to replace unknown values using background knowledge of data that is often available arising from a concept hierarchy, as integrity constraints, from database integration, or from knowledge possessed by domain experts. We present and examine the case of H-IFS to represent support contained in subsets of the domain as a candidate for replacing unknown values mostly referred in the literature as NULL values.
Keywords: Null values, Intuitionistic fuzzy sets, Knowledge representation
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