, Volume 8, Issue 1, pp 17-28

First online:

On qualitative modelling

  • Jarmo J. AhonenAffiliated withLappeenranta University of Technology Email author 

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Fundamental assumptions behind qualitative modelling are critically considered and some inherent problems in that modelling approach are outlined. The problems outlined are due to the assumption that a sufficient set of symbols representing the fundamental features of the physical world exists. That assumption causes serious problems when modelling continuous systems. An alternative for intelligent system building for cases not suitable for qualitative modelling is proposed. The proposed alternative combines neural networks and quantitative modelling.


Expert systems Modelling Qualitative modelling