Knowledge based spatio-functional optimisation of urban environment

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Knowledge based spatio-functional optimisation of
urban environment
Richard Pouš Tomáš HlásnyMatej Bel University,
Faculty of Natural Sciences, Dept. of Geography,
SLOVAKIA
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The purposes

• To adapt the multi-criteria decision making
  techniques to optimise the intensification
  processes in a city built up area
• To demonstrate these ideas in the Banská Bystrica
  city case study
• To develop the database of the city spatial
  reserves
• To judge the city spatial reserves
  intensification potential
• To classify city spatial reserves into the
  appropriate suitability categories

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The properties of knowledge-based optimisation of
urban environment

• Multiciteria nature
• Operationality
• Objectification
• Retrogressive controlling

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The workflow

• Data gathering and processing
• Decision frame definition
• Evaluating space potential
• Expert judgements analysis and synthesis
• Synthesising
• Classification
• Backward tuning of decision scheme
• Interpretation

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Case Study Banska Bystrica city (Central
Slovakia)

• Position
• History
• Functions

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Area of interest

• Banska Bystrica city built up area delimited by
  plot borders

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Urbanely Unused Areas The Main Potential of
Morphological Intensification

• The definition All the areas laying in a city
  built up area the functions of which differ from
  those defined as city functions (i.e. living,
  working, recreation, traffic)

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Materials and methods

• Data
• Field mapping
• Extracting data from municipal database
• Cadastre maps
• Database
• GeoMedia Professional, v.5.2
• Spatial component (plots, rivers, roads,
  administrative borders, etc.)
• Attribute component (unused areas geometric and
  thematic features, e.g. size, slope, distance
  from the city center, position in biocorridor,
  etc.)

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The criteria used

• Kind of urbanely unused area
• Position towards central city zone
• Distance from the city functional centre
• Distance from the city built up area edges
• Size
• Compactness
• Slope
• Slope aspect
• Position towards climate inversions
• Accessibility

• Further criteria considered
• Ownership
• Engineering networks
• Prices of plots
• Functional surrounding of the area
• etc.

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Expert judgements
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Synthesis No.1 arithmetic mean
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Synthesis No.2 Principal Component Analysis
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Weights derived as PCA scores
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Scree plot of PCA
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The synthesis
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Next plans

• Include further information to evaluate
  intensification potential more effectively.
• How intensification potential develops
  horizontally? Are there some global trends or
  gradients ?
• How to implement the results of our research into
  municipal databases?

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Conclusion

• The methodology is sensitive mainly to criteria
  and adjudicators selection and chosen
  synthesizing scheme.
• The case study proved
• The highest weights were reached by the criteria
  related to position towards important city
  components
• The second place took the morphological
  properties
• The third place took the environmental criteria
  related to the natural and hygienic parameters of
  the plots

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Morphological Intensification of Spatial
Development in Postsocialist Cities - Banská
Bystrica (Central Slovakia) Case Study
Thank you for your attention
Richard Pouš Tomáš HlásnyMatej Bel University,
Faculty of Natural Sciences, Dept. of Geography,
SLOVAKIA