Covering numbers in covering-based rough sets
作者： Shiping Wang , Fan Min , William Zhu
DOI: 10.1007/978-3-642-21881-1_13
关键词:
摘要: Rough set theory provides a systematic way for rule extraction, attribute reduction and knowledge classification in information systems. Some measurements are important rough sets. For example, entropy, dependency useful algorithms. This paper proposes the concepts of lower upper covering numbers to establish covering-based sets which generalizations With numbers, we distance structure, two semilattices lattice The new helpful studying from topological algebraical viewpoints.
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