Abstract
In previous paper, we introduced a concept of multi-rough sets based on a multi-contexts information system (MCIS). The MCIS was defined by a pair I = (U,A), where U is a universal set of objects and A is a set of contexts of attributes. For every A i ∈A is a set of attributes regarded as a context or background, consequently, if there are n contexts in A, where A = {A i ,...,A n }, it provides n partitions. A given set of object, X ⊆ U, may then be represented into n pairs of lower and upper approximations defined as multi-rough sets of X. In this paper, our primary concern is to discuss three kinds of general contexts, namely AND-general context, OR-general context and OR + -general context.
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Intan, R., Mukaidono, M. (2003). Multi-rough Sets and Generalizations of Contexts in Multi-contexts Information System. In: Zhong, N., Raś, Z.W., Tsumoto, S., Suzuki, E. (eds) Foundations of Intelligent Systems. ISMIS 2003. Lecture Notes in Computer Science(), vol 2871. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-39592-8_24
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DOI: https://doi.org/10.1007/978-3-540-39592-8_24
Publisher Name: Springer, Berlin, Heidelberg
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