Java内部类的定义，在对其分类研究的基础上，给出了各种内部类的使用方法、访问控制和应用实例。-Java inner class definition, on the basis of their classification is given to use a variety of internal classes, access control and application examples.

this is implementation of classification problem with fuzzy.

关键词:文本分类 特征降维 规则抽取 模式聚合 粗糙集 -Keywords: text classification feature dimension reduction rule extraction model aggregation rough set