Qualitative simulation in the limit

K. Hangos, Zs Csáki

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Limit properties of the QSIM algorithm with respect to the spurious behaviours have been analysed in this short paper, in the case of approximating landmark sets and non-qualitative right-hand side functions. It has been shown that at least two types of spurious behaviour do not disappear in the limit. The first type corresponds to the identically constant solution and appears when the solution passes the zero location of the right-hand side function, i.e. at a critical point. The second type is a consequence of the rigid sign-based description of qualitative directions and it may appear in every multivariable case (for sets of qualitative differential equations). The commonly applied global filters do not remove the source of the problems. A mathematically correct solution would be using the extensions of the usual numerical methods for integrating ordinary differential equations operating on intervals.

Original languageEnglish
Pages (from-to)105-109
Number of pages5
JournalArtificial Intelligence in Engineering
Volume7
Issue number2
DOIs
Publication statusPublished - 1992

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Ordinary differential equations
Numerical methods
Differential equations

Keywords

  • limit analysis
  • qualitative reasoning
  • qualitative simulation
  • spurious behaviour

ASJC Scopus subject areas

  • Computer Science(all)
  • Engineering(all)

Cite this

Qualitative simulation in the limit. / Hangos, K.; Csáki, Zs.

In: Artificial Intelligence in Engineering, Vol. 7, No. 2, 1992, p. 105-109.

Research output: Contribution to journalArticle

Hangos, K. ; Csáki, Zs. / Qualitative simulation in the limit. In: Artificial Intelligence in Engineering. 1992 ; Vol. 7, No. 2. pp. 105-109.
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