Techniques in spatial decision support
The capacity of GIS for integrating information from a variety of sources in a spatial context makes them well suited to supporting decision-making procedures that must take account of multiple factors. This chapter is concerned with techniques that employ geographically referenced information to identify locations, paths and spatial interactions that are optimal, or at least in some sense preferable, when measured against the factors of interest. These techniques can contribute to decision-support systems (DSS) which help decision-makers to formulate problems, create appropriate models and evaluate outcomes that the model may predict. The GIS aspect of such systems is sometimes referred to as spatial decision support.