Constructing Strategies in Strategic Urban Planning: A Case Study of a Decision Support and...

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www.lampnet.or ASA: Actions Strategies Actors A decision support evaluation model

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Constructing Strategies in Strategic Urban Planning: A Case Study of a Decision Support and Evaluation ModelIvan Blečić, Arnaldo Cecchini, Giuseppe A. Trunfio - Department of Architecture, Planning and Design, University of Sassari, Alghero

Transcript of Constructing Strategies in Strategic Urban Planning: A Case Study of a Decision Support and...

Page 1: Constructing Strategies in Strategic Urban Planning: A Case Study of a Decision Support and Evaluation Model

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ASA:Actions

Strategies Actors

A decision support

evaluation model

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Introduction

Problems with composite (strategic) plans:– How actions and projects should be activated,

in which order, where to begin with?– What are the flagship or “hub” projects?– How to relation them to relevant actors

(political “arena”)?– What is the implementation strategy?

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Evaluation criteria

• Evaluate projects with respect to 3 criteria:

1. Actors’ interest

2. Projects’ relevance

3. Cost

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Actors’ interestBased on:

Influence factor Effort factor

Actors’ interest

• measures how important an actor if for the realisation of a project

• Expressed on an qualitative ordinal scale: “key actor (activator)”, “compulsory actor”, “influent actor”, “marginally influent actor”, “non-influent actor”

• measures the willingness to invest (in wide sense) in a project

• Expressed on an numeric ratio scale

Overall interest for a project (aggregation):Weighted mean of efforts, using influences as weights

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Relevance criterion

• Effectiveness of sequences of projects with regard to plan’s objectives

• Considers:• “direct” relevance• Interdependencies (synergies)

• Calculus based on the estimation of relevance of every pair or projects:

• relevance of a simple two-projects sequence: r(i,j)

• Relevance of a longer sequence

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Relevance criterion

Project 1 Project 2 Project 3 Project 4

r(1,2)

r(1,3)r(1,4)

r(3,4)

r(2,3)

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Costs criterion

• Considers:

1. Economical and financial technical costs

2. The possibility/probability of “external” financing

• may depend on the level or agreement among actors

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Possible evaluation

Relevance

Costs

Interest

3 criteria – 3 dimensions

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Possible evaluationsInteractive exploration of the solution spaceSearch based on filters and constraints on costs, relevance, interest, etc.

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Possible evaluations

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Possible evaluationsAncillary results: veto power of actors on the overall plans’ objectives

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Reporting tool• export in pdf,

html (for web publishing)

• Export in csv for further analysis

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Salient aspects• 3 criteria covers 3 fundamental dimensions of

decision-making• works on and with sequences of projects

(trying to cope with potential synergic effects)• Some levels of sophistication but still

transparent, understandable and accountable• Interactive exploration of solution space, with

no final aggregation in a single utility function