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id ddssup9612
authors Kribbe, Willeke and Sanders, Frank
year 1996
title Growth of spatial network constructions: a decision support systems oriented approach
source Timmermans, Harry (Ed.), Third Design and Decision Support Systems in Architecture and Urban Planning - Part two: Urban Planning Proceedings (Spa, Belgium), August 18-21, 1996
summary The paper describes a method that has been developed to be used in a process for a systematic search of alternative designs for a network configuration. In the design process we will take into account that we may not be able to implement the full configuration all at once. Logical partial configurations must be derived. The process can than also be used to investigate the expansion of (railroad) networks. The basic idea is that either the most profitable trajectories or the trajectories that contribute most to the improved quality of the configuration will be developed first. A method cannot incorporate all criteria that are relevant for the final decision simultaneously, one of the reasons being that not all criteria are suitable for a mathematical formulation. Therefore a method cannot be used to replace current legal and political procedures. However it can be considered to be part of a decision support system that could be used in a preliminary investigation preceeding such procedures. In the example presented in this paper the criteria and calculations are kept simple for illustrative purposes. However they can easily be made more complex and realistic without damaging the fundamental concepts of the search algorithm. If the system is implemented in a way that the criteria to be used in the selection process can be chosen in interaction with the decision maker (or moderator) one can truly speak of a decision support system for the project formulation phase for the construction of the physical network. In the algorithm the network is represented as a graph and the nodes connected by the network are termed centers of attraction, supply and demand.
series DDSS
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