城市住房发展与灰色系统邓学璟，甘绍一、灰色系统的概念灰色系统是指有信息不完全或不确知现象的系统、这类系统在客观世界尤其是社会经济领域里广为存在。例如，有很多抽象系统没有物理原型，系统的作用机制不太清楚，系统的边界关系、状态、结构等难以精确描述，以致无... Urban Housing Development and Gray System DENG Xue-jing, GAN Shao-yi, The concept of gray system Gray system is a system with incomplete or uncertain information. Such systems are widespread in the objective world, especially in the social economy. For example, there are many abstraction systems that do not have physical prototypes, the system’s mechanism of action is not clear, and the system’s boundary relationships, states, structures, etc. are difficult to accurately describe.