Σύγκριση μεθόδων

	Μέθοδος Delphi	Multi-Criteria Policy Analysis
Πεδίο	Ποιοτικές Μέθοδοι	Public Policy
Οικογένεια	Process / pipeline	MCDM
Έτος προέλευσης	1963	2002
Δημιουργός	Norman Dalkey & Olaf Helmer (RAND Corporation)	Valerie Belton & Theodor Stewart (synthesis); MCDA tradition
Τύπος	Structured iterative expert-elicitation process	Multi-criteria decision analysis applied to policy appraisal
Θεμελιώδης πηγή	Dalkey, N. & Helmer, O. (1963). An Experimental Application of the Delphi Method to the Use of Experts. Management Science, 9(3), 458-467.	Belton, V., & Stewart, T. J. (2002). Multiple Criteria Decision Analysis: An Integrated Approach. Boston: Kluwer Academic Publishers. ISBN: 9780792375050
Εναλλακτικές ονομασίες	Delphi Yöntemi, Delphi technique, expert consensus method	Multi-Criteria Analysis for Policy, MCDA Policy Appraisal, MCA in Policy, Multi-Criteria Policy Appraisal
Συναφείς	5	3
Σύνοψη	The Delphi method is a structured, iterative survey technique developed by Norman Dalkey and Olaf Helmer at the RAND Corporation in 1963 for eliciting and converging expert opinion on complex topics where empirical data are unavailable or insufficient. It collects independent judgements from a geographically dispersed expert panel over multiple anonymous rounds, feeding aggregated results back to participants after each round so they can revise their views in light of the group's collective position.	Multi-criteria policy analysis applies multi-criteria decision analysis (MCDA) to appraise and rank policy options against several, often conflicting, objectives that cannot be reduced to a single money metric. Each option is scored on a set of explicit criteria — economic, social, environmental, distributional — the criteria are weighted to reflect their relative importance, and the scores are aggregated into an overall value that ranks the options. Set out comprehensively in Belton and Stewart's 2002 textbook and operationalised for government in the UK's widely used Multi-Criteria Analysis Manual, the approach makes the trade-offs in a policy decision transparent and structured rather than implicit.