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The main features of complex impact systems are imprecision (different levels of measurement of the available information), and uncertainty (stochastic and/or fuzzy). This paper deals with the problem of the presence of such qualitative information. In particular the use of concepts of fuzzy set theory in order to represent qualitative information is defended in the light of their mathematical and psychological properties. A new semantic distance and a generalisation of the Minkowski p-metric, which is particularly useful for mixed information (crisp, fuzzy and stochastic), are presented. Proof of the fulfillment of the triangle inequality property and a numerical algorithm for the semantic distance are given.

Additional information

Authors: MUNDA G, JRC Ispra (IT);NIJKAMP P, Free University, Department of Economics, Amsterdam (NL);RIETVELD P, Free University, Department of Economics, Amsterdam (NL)
Bibliographic Reference: Article: Ricerca Operativa, Vol. 23 (1993) No. 65, pp. 5-25
Record Number: 199311549 / Last updated on: 1994-11-28
Original language: en
Available languages: en
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