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pro vyhledávání: '"Akinari Yamaguchi"'
Publikováno v:
Journal of Intelligent Information Systems. 30:115-135
In most practical database applications, incompleteness and duplication of facts should be carefully handled. We propose bag-based data models for incomplete information, called V-bags, CV-bags, GV-bags, and CGV-bags. In V-bags, incompleteness is rep