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arXiv 1409.0980cs.DB
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单调函数依赖

Monoidal functional dependencies

Vilem Vychodil

摘要:

我们提出了一个完整的逻辑推理功能依赖(FD)的语义定义在类的交换积分偏序幺半群和完全剩余格。依赖关系使我们能够表达比普通FD更强的属性值之间的关系。在我们的设置中,依赖关系不仅表示某些值由其他值确定,而且还表示属性的相似值意味着其他属性的相似值。我们展示了完整的公理化系统的阿姆斯特朗一样的规则,评论相关的计算问题,和关系与命题语义的依赖关系。

英文摘要:

We present a complete logic for reasoning with functional dependencies (FDs) with semantics defined over classes of commutative integral partially ordered monoids and complete residuated lattices. The dependencies allow us to express stronger relationships between attribute values than the ordinary FDs. In our setting, the dependencies not only express that certain values are determined by others but also express that similar values of attributes imply similar values of other attributes. We show complete axiomatization using a system of Armstrong-like rules, comment on related computational issues, and the relational vs. propositional semantics of the dependencies.

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