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Information chain consists of information acquisition, information processing, information transmission and information application. Compared with the other three technologies, information acquisition has dropped far behind and is becoming a bottleneck for the rapid development of the time. Embedded system has been successfully applied in industrial(More)
Rough sets are efficient for data pre-processing in data mining. As a generalization of the linear independence in vector spaces, matroids provide well-established platforms for greedy algorithms. In this paper, we apply rough sets to matroids and study the contraction of the dual of the corresponding matroid. First, for an equivalence relation on a(More)
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