Missing Value Semantics and Absent Value Semantics for Incomplete Information in Object-Oriented Rough Set Models

Missing Value Semantics and Absent Value Semantics for Incomplete Information in Object-Oriented Rough Set Models
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DOI:
10.1007/978-3-540-76973-6_1
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发表时间:
2008
期刊:
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影响因子:
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通讯作者:
Y. Kudo;T. Murai
Y. Kudo;T. Murai
中科院分区:
其他
文献类型:
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作者:
Y. Kudo;T. Murai

文献摘要

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我们考虑 Kudo 和 Murai 提出的面向对象粗糙集模型中的“缺失值”语义和“缺席值”语义。面向对象的粗糙集模型(OORS)是粗糙集理论的扩展,引入了面向对象范式,并基于 is-a 和 has-a 关系来处理半结构化对象和对象之间的层次结构。在本章中,我们提出了 OORS 的空值对象,并修改了 Kryszkiewicz 的容差关系,该关系将 OORS 中的“缺失值”语义描述为“缺少部分”的不完整性。此外,我们讨论了 OORS 中“缺席值”语义与 is-a 关系之间的联系,并修改了 Stefanowski 和 Tsoukiàs 提出的相似关系,该关系将 OORS 中的“缺席值”语义描述为由于对象体系结构的差异而导致的不完整性。
We consider the “missing value” semantics and the “absent value” semantics in object–oriented rough set models proposed by Kudo and Murai. The object–oriented rough set model (OORS) is an extension of rough set theory by introducing object–oriented paradigm, and treats semi-structured objects and hierarchies among objects based on is-a and has-a relationships. In this chapter, we propose null value objects of OORS and revise Kryszkiewicz’s tolerance relations, which characterize “missing value” semantics in OORS as incompleteness by “lack of parts”. Moreover, we discuss connections between “absent value” semantics and is-a relationship in OORS, and revise similarity relations proposed by Stefanowski and Tsoukiàs, which characterize “absent value” semantics in OORS as incompleteness by difference of architecture of objects.