Speed-up, quality and competence in multi-modal case-based reasoning

Luigi Portinale, Pietro Torasso, Paolo Tavano

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Abstract

The paper discusses the different aspects concerning performance arising in multi-modal systems combining Case-Based Reasoning and Model-Based Reasoning for diagnostic problem solving. In particular, we examine the relation among speed-up of problems solving, competence of the system and quality of produced solutions. Because of the well-know utility problem, there is no general strategy for improving all these parameters at the same time, so the trade-off among such parameters must be carefully analyzed. We have developed a case memory management strategy which allows the interleaving of learning of new cases with forgetting phases, where useless and potentially dangerous cases are identified and removed. This strategy, combined with a suitable tuning on the precision required for the retrieval of cases (in terms of estimated adaptation cost), provides an effective mechanism for taking under control the utility problem. Experimental analysis performed on a real-world domain shows in fact that improvements over both speed-up and competence can be obtained, without compromising in a significant way the quality of solutions.

Lingua originaleInglese
Titolo della pubblicazione ospiteCase-Based Reasoning Research and Development - 3rd International Conference on Case-Based Reasoning, ICCBR 1999, Proceedings
EditorKlaus-Dieter Althoff, L. Karl Branting, Ralph Bergmann
EditoreSpringer Verlag
Pagine303-317
Numero di pagine15
ISBN (stampa)3540662375, 9783540662372
DOI
Stato di pubblicazionePubblicato - 1999
Evento3rd International Conference on Case-Based Reasoning, ICCBR 1999 - Seeon Monastery, Germany
Durata: 27 lug 199930 lug 1999

Serie di pubblicazioni

NomeLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume1650
ISSN (stampa)0302-9743
ISSN (elettronico)1611-3349

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???event.eventtypes.event.conference???3rd International Conference on Case-Based Reasoning, ICCBR 1999
Paese/TerritorioGermany
CittàSeeon Monastery
Periodo27/07/9930/07/99

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