Decision support systems (DSS) that are simple, spatial, flexible, non-deterministic and have a long track record of practical application in a policy environment have until recently been uncommon.

• 简单的，空间的，和有柔性的,非的决定支持制度(DSS)决定论的而且有政策环境的一个实际申请的长记录直到最近是不寻常的。