Transitive fuzzy dependencies (II)

J.C. Cubero; J.M. Medina; O. Pons

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Transitive fuzzy dependencies (II)

机译：传递模糊依赖关系（II）

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摘要

In the previous work we accomplished the problem of defining fuzzydependency as well as projection and join operators which allow us todecompose a database in such a way that this process is fuzzy lossless. The definition of rules-based fuzzy dependency did not satisfythe transitivity axiom, which is crucial to obtaining thecompleteness of the counterpart of Armstrong axioms for fuzzydependencies. In this paper we introduce an alternate definition ofdependency called restricted dependency, satisfying the transitivityproperty of inference. All the results obtained with the firstdefinition of dependency are also extended to this case. The price topay for transitivity is a more restricted definition of fuzzydependency.

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来源
《Fuzzy sets and systems》 |1999年第3期|433-448|共16页
作者
J.C. Cubero; J.M. Medina; O. Pons;
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作者单位

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类模糊数学;
关键词
Fuzzy functional dependencies; Fuzzy projection; Fuzzy join; Fuzz;

机译：模糊功能依赖;模糊投影;模糊连接;警员;

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Transitive fuzzy dependencies (II)

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