Has analyzed the rough set in the weather forecast function, has studied the case base attribute separate method, and through the discernibility matrix method to reduct attribute, reduced the model retrieval time and the spatial expenses.

• 分析了粗糙集在气象预测中的作用,研究了范例库属性离散化的算法,并通过分明矩阵的方法对属性约简,减少了范例检索的时间和空间开销。