Fuzzy logic and coherence control in multi-criteria evaluation of urban redevelopment projects

In the decision-making process of urban regeneration projects, the lack of transparency is one of the most frequent causes of the deceleration and the stopping of initiatives. In the present work, with reference to a multi-criteria model recently developed for the municipality of Rome (Italy), a solution to this issue has been proposed. Borrowing the formal logic of fuzzy systems, the possibility to assign a different importance to the parameters which explain the objectives of the redevelopment, to compare the projects submitted by different operators, as well as to make it clear the phase in which the public administration evaluates the priorities of the projects, has been introduced. A measure of the coherence of the projects submitted by private operators with the importance of the objectives of redevelopment set by the public administration has been computed. The result is a flexible structure of the algorithm developed, able to adapt to the specificities of the case study and to the changes that, over time, could arise in the evaluation mechanism of the decision maker.