Identify the best offer among different offers (ofdifferent numbers depending on the type of competition)on the basis of an average number of informationBuilding a set of possible solutions excludinghypotheses that can not be prosecutedIdentify all possible solutions in relation to specificfactorsNumber of evaluationelementsTypology ofindicatorsExpected solutionTechnical support of aDecision Aid SpecialistStakeholders to be includedin the decision processToolOutput Typology orordering of alternativesDecision ProblemSolutionFigure 1.Action to be taken with exogenous and endogenous variables.2.3. Exogenous VariablesIn this section, exogenous variables will be examined: (i) By the number of evaluation elements;(ii) By the typology of the indicators; (iii) The stakeholders involved in the decision process;
Sustainability2018,10, 5076 of 28(iv) The typology of the expected solution; (v) The presence of technical support from a DecisionAid Specialist during the implementation of the procedure. In the settlement transformation process,the number of evaluation elements (criteria, sub-criteria and alternatives) depends on the nature of thedifferent decision-making problems [8,30,36–40].The numeric configuration of evaluation elements (Table2) is generally decided by the personresponsible for the evaluation process before the selecting the most suitable MCDA method withreference to the specific problem in hand. In the case of settlement transformation processes, whichare generally rather complex, the number of criteria and sub-criteria are defined by the processmanager (Responsabile del Procedimento), role regulated by the Legislative Decree 50/2016 Article 31.This is the individual who “provides the authority offering the contract with the data and informationregarding the main stages of the intervention, necessary for the coordination, guidance and checks ofthe correct implementation, and oversees the economic management of the intervention” (LegislativeDecree 50/2016 Article 31, par. 4, point f). This kind of activity has been present since the definition ofadministrative acts relating to settlement process initiation. The person responsible for the evaluationprocess must attempt to construct the set of evaluation elements without allowing the potentialrepercussions to overly influence the selection of an MCDA method. Although the creation of the set ofvariables must of course represent the maximum number of requirements with the minimum numberof possible elements [35,41,42]. The number of alternatives can be deduced by taking into accountwhat has happened in the past in similar settlement proceedings in the same or in other administrativecontexts [43,44]. The typology of the indicators (Table3) varies in accordance with the decision-makingproblem to be resolved and the context in which it arises.