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As a practical method for knowledge reduction, discernible matrix (DM) has been widely used in practice. However, due to the high cost of constructing and reducing of a matrix, the efficiency of this method falls far short of people's demands. In order to decrease the cost of knowledge reduction based on the ideas of set theory, the paper presents a new approach, which is called the minimum discernible...
In order to cut down the high cost of knowledge reduction by using discernible matrix (DM), this paper, based on the idea of set operation, presents a new approach, which is called the minimum discernible core set (MDCS). Beginning at the selection of an indiscernible attribute, other attributes are added one by one until forming a set, which can discern a knowledge system. By the formal description...
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