有利于帮助初级爱好者了解和学习黑客技术，仔细研读收获不少,Could help understanding and learning in primary lovers hacking technology, harvesting a lot of careful study

简单介绍粗粗糙集的起源、应用领域、发展前景。还有就是介绍了简单的应用，适合初级者学习。-Brief introduction to the origin of rough rough sets, applications, development prospects. There is described a simple application, suitable for beginners to learn.