Fuzzy systems have been proved to be excellent candidates for system dynamics identification. However, they are affected by two drawbacks: the resulting nonlinear model (i) does not guarantee that the generalization property holds unless a large amount of samples is employed, and (ii) is not understandable from a physical viewpoint. These drawbacks are particularly serious when fuzzy identification deals with complex natural systems as the observational data set and/or empirical knowledge can occur to be inadequate. For these systems, the available knowledge of the underlying mechanisms is qualitative and highly incomplete, and does often prevent from formulating a quantitative differential model but not a qualitative one. This paper demonstrates that Qualitative Reasoning methods properly integrated with fuzzy systems yield a hybrid system identification method that overcomes the problems outlined above.
Scheda prodotto non validato
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo
Titolo: | Qualitative-fuzzy system identification of complex dynamical systems |
Autori: | |
Data di pubblicazione: | 2007 |
Abstract: | Fuzzy systems have been proved to be excellent candidates for system dynamics identification. However, they are affected by two drawbacks: the resulting nonlinear model (i) does not guarantee that the generalization property holds unless a large amount of samples is employed, and (ii) is not understandable from a physical viewpoint. These drawbacks are particularly serious when fuzzy identification deals with complex natural systems as the observational data set and/or empirical knowledge can occur to be inadequate. For these systems, the available knowledge of the underlying mechanisms is qualitative and highly incomplete, and does often prevent from formulating a quantitative differential model but not a qualitative one. This paper demonstrates that Qualitative Reasoning methods properly integrated with fuzzy systems yield a hybrid system identification method that overcomes the problems outlined above. |
Handle: | http://hdl.handle.net/11571/32407 |
ISBN: | 9781424412105 |
Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |