Recent Issues on Fuzzy DatabasesGloria Bordogna, Gabriella Pasi First of all, I would like to congratulate Gabriella Pasi and Gloria Bordogna for the work they accomplished in preparing this new book in the series "Study in Fuzziness and Soft Computing". "Recent Issues on the Management of Fuzziness in Databases" is undoubtedly a token of their long-lasting and active involvement in the area of Fuzzy Information Retrieval and Fuzzy Database Systems. This book is really welcome in the area of fuzzy databases where they are not numerous although the first works at the crossroads of fuzzy sets and databases were initiated about twenty years ago by L. Zadeh. Only five books have been published since 1995, when the first volume dedicated to fuzzy databases published in the series "Study in Fuzziness and Soft Computing" edited by J. Kacprzyk and myself appeared. Going beyond books strictly speaking, let us also mention the existence of review papers that are part of a couple of handbooks related to fuzzy sets published since 1998. The area known as fuzzy databases covers a bunch of topics among which: -flexible queries addressed to regular databases, -the extension of the notion of a functional dependency, -data mining and fuzzy summarization, -querying databases containing imperfect attribute values represented thanks to possibility distributions. |
Contents
ValueBased and RepresentationBased Querying of Possibilistic | 3 |
Flexible Division Operators in Possibilitybased | 29 |
Discovery of Fuzzy Generalized Association Rules | 45 |
On Combining Intelligent Querying and Data Mining | 67 |
Uncertainty in Distributed and Interoperable Spatial Information | 85 |
On Fuzzy Sets and the Management of Uncertainty | 109 |
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Common terms and phrases
algorithm allows answer applications approach association rules attribute values basic called classical complex Computer conceptual conflation consider consists constraint constructor contains context corresponding create crisp database defined definition degree dependent described determined domain elements example exists expressed extended Figure FOOD formal framework function fuzzy querying fuzzy relational fuzzy sets generalised Geographic Information Systems given graph graphical implementation imprecise instance integrated interface involving issues KBLIMS Knowledge label language linguistic logical matching means measure membership membership function methods mining NULL object scheme object type object-oriented obtained operators possibility possibility distribution predicate present problem properties quantifiers query reference relation relationships representation represented respectively result satisfy schema semantics shown similarity spatial specified stored structure summaries theory transactions tuple uncertain uncertainty vague variables weighted
References to this book
Advances in Fuzzy Object-oriented Databases: Modeling and Applications Zongmin Ma Limited preview - 2005 |