set pair的用法和樣例：
例句
- This reduction also enables us to obtain some information about the number of colourings of a graph with a given set of colours.
這種化法也能使我們得到關於用給定的顏色集對一個圖的著色的數目的某些信息。 - Then the IIS after the object reduction is investigated through the set pair analysis.The attribute dependency is obtained and the attributes are further reduced.
用基於集對分析方法的改進集對粗集模型對已進行了對象約簡的不完備信息系統進行分析，找出各個屬性之間的依賴關係，進一步進行屬性約簡。
