The search for suitable locations for economic activities represents a konstitutive economical task. This concerns highly complex problem definitions. Mathematical optimization procedures fail because of the exponentially increasing complexity with rising criterion number as well as large excluding increasingly of the qualitative criteria important in the reality.
Due to the mathematical complexity, as well as the limited of the decision makers in the location-theoretical literature the goal of the optimization is given up to the existence of qualitative location factors in favor of the search for suitable locations.
The location planning literature publicises a gradual proceeding with the selection of suitable locations. At international location decisions a filter process of land preselection over rough planning up to the detailed planning and last-finite definition takes place on a trade area, a property or a real estate.
Optimization models with the goal the location optimal in accordance with the location criteria to find, are used rarely in enterprise practice. They are predominantly common in the logistics range, whereby the transport costs minimization possesses the largest weight. For complex location problems, for which to are to be considered a large number from qualitative criteria, the efficiency analysis is far common.
A multiplicity of location criteria exhibits an explicit or implicit space reference. Socio-economic phenomena are usually clearly in the area located. Between you spatial and temporal distances exist. Besides many location criteria possess spatial effects, i.e. your relevance goes beyond the direct location.
Furthermore the spatial distribution from phenomena is to be considered to. Classical statistic methods are based on the acceptance of the spatial uniform distribution of phenomena. This contradicts all observations of the reality. So that are connected the demarcation problem and the phenomenon of the spatial autocorrelation (the development of phenomena is positively correlated with the spatial proximity)
Conventional procedures like the efficiency analysis are e.g. based exclusively on alphanumeric actual datas to location criteria. The space reference of the location criteria remains generally unexplored and from the decision-making process excluded with conventional methods.
These methodical bottlenecks can be overcome by the employment by geo information systems during the evaluation of location. Here the criteria with your geographical coordinates in digital data bases will be able seized and after material and be analyzed and evaluated spatial aspects. The results are prepared cartographic for interpretation.
The conception of the method is: http://www.gis-standortbewertung.de
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