This paper introduces the concept of decision map and illustrates the way this concept can be used for spatial decision making in urban planning. The decision map is defined as an advanced version of conventional geographic maps which is enriched with preferential information and especially destined to “visual” spatial decision making. The concept of decision map as defined here is a generic tool that may be used for several purposes. This paper focuses on the general aspects of the decision map. It also briefly shows how the concept of decision map can be extended to support collaborative and communicative spatial decision making.
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