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cs.AI2012
Matrix approach to rough sets through vector matroids over a field
Aiping Huang, William Zhu
Rough sets were proposed to deal with the vagueness and incompleteness of knowledge in information systems. There are may optimization issues in this field such as attribute reduct…
cs.AI2012
Geometric lattice structure of covering-based rough sets through matroids
Aiping Huang, William Zhu
Covering-based rough set theory is a useful tool to deal with inexact, uncertain or vague knowledge in information systems. Geometric lattice has widely used in diverse fields, esp…
cs.AI2012
Topological characterizations to three types of covering approximation operators
Aiping Huang, William Zhu
Covering-based rough set theory is a useful tool to deal with inexact, uncertain or vague knowledge in information systems. Topology, one of the most important subjects in mathemat…