MCDA - Multicriteria analysis for decision aid

1. MCDA - Multicriteria analysis for decision aid • for what? • decision aid • concertation and optimisation • acceptation and share • …magic tricks and propaganda • example 1 : chosing a president • application : flood risk mitigation • chosing between different scenarios

2. The different stages • precise the question what / why / who • identify the different alternatives • selection of criteria and indicators • give a weight to the different criteria • determine the values of the indicators for each different alternative • rate the alternatives

3. stage 1 : precise the question choosing a president • What • the guy who will run the country during the next 5 years • Who • the whole family decides what Mom will vote • Dad and his parents are non EU citizen • The kids are too young

4. stage 2 : identify the different alternatives • Adam • Bacchus • Chloe • Demeter • Eve

5. choosing a president • at this point different methods may be used • 1st method : the ballot • 2nd method : elimination process • A/B >> A • A/C >> A • A/D >> D • D/E >> E • 3rd method : MCDA

6. stage 3 : selection of criteria and indicators

7. choosing a president • at this point different methods may be used agreement : the future president must be a woman

8. stage 4 : give a weight to the different criteria

9. stage 6 : rate the alternatives • precise the question what / why / who • identify the different alternatives • selection of criteria and indicators • give a weight to the different criteria • determine the values of the indicators for each different alternative • rate the alternatives

10. stage 1 : precise the question • precise the question what / why / who • identify the different alternatives • selection of criteria and indicators • give a weight to the different criteria • determine the values of the indicators for each different alternative • rate the alternatives