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Revolutionizing Brownfield Redevelopment: Fuzzy Delphi Method Analysis

Explore the innovative Fuzzy Delphi Method for Brownfield Redevelopment analysis. Learn about data extraction approaches, expert and user databases, and the importance of key features. Understand the benefits of incorporating uncertainty in decision-making. Dive into the procedure, calculation steps, and survey results. Gain insights into the varied perspectives of independent developers, contractors, governmental agencies, and more. Discover how prioritizing features can influence the success of Brownfield Redevelopment projects across different expert groups.

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Revolutionizing Brownfield Redevelopment: Fuzzy Delphi Method Analysis

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Presentation Transcript

  1. Rethinking Brownfield Redevelopment features:Fuzzy Delphi Method Brano Glumac

  2. Intro • Two basic ways to extract the data • Database collected from final users • Database collected from experts

  3. Method • Delphi Method helps the group thinking process • From (Dalkey and Helmer, 1963) • Procedure: Brainstorming, Narrowing Down, Ranking

  4. Research task • What are the most important features for Brownfield Redevelopment? • Features • Brownfield (Alker, 2000) 4-1-2020 PAGE 3

  5. Fuzzy Delphi • What is it? • Derived from the traditional Delphi technique and Fuzzy Set theory (Murray, Pipino, and Gigch 1985) • Fuzziness lack of definite or sharp distinctions • Benefits • Incorporate uncertainty due to human factor • Less questionnaires

  6. Fuzzy Delphi Procedure

  7. Fuzzy Delphi Calculation Steps • Steps: • Validate features • Collect evaluation score for each feature • Set-up fuzzy number (Klir and Yuan, 1995) • Defuzzification S • Setting a threshold α

  8. Survey Results

  9. Survey Results Ratings of Independent developers 1 - A14 - Administrative support - 8,20 2 - A4 - Embedded into the urban fabric -8,02 3 - A2 - Accessibility - 7,75 4 - A19 - Potential for different land-use - 7,61 5 - A17 - Support of surrounding users - 7,50 6 - A12 - Existing neighborhood image - 7,39 7 - A15 - Approval process - 7,16 Rating Of Contractors 1 - A19 - Potential for different land-use - 7,69 2 - A14 - Administrative support -7,52 3 - A10 - Heritage - 7,23 4 - A13 - Ownership - 7,17 Overall Rating 1 - A19 - Potential for different land-use - 7,61 2 - A14 - Administrative support - 7,54 Rating of Governmental Agencies 1 - A19 - Potential for different land-use - 7,96 2 - A14 - Administrative support - 7,33 3 - A2 - Accessibility - 7,21 4 - A10 - Heritage - 7,04 5 - A16 - Support of local users - 7,00

  10. Discussion • The selection procedure and importance of the Brownfield redevelopment features • Different priorities for different expert groups

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