Listing 7. glpsol report for the set covering problem.
清单7 . glpsol对集合覆盖问题的报告。
The set covering problem teaches binary decision variables; that is, they can only be 0 or 1, yes or no.
集合覆盖问题涉及的是二元决策变量；也就是说，它们的值只能是0或1、yes或no。
Then discusses the attributes reduction based on Rough Set theory and set covering problem to combine them.
然后简单探讨了粗糙集理论的属性约简和集合覆盖问题，从而将二者联系起来。
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