Comparer des méthodes

	Méthodologie des Systèmes Mous (MSM)	Méthode Delphi
Domaine	Structuration de problèmes	Qualitatif
Famille	Process / pipeline	Process / pipeline
Année d'origine	1981	1963
Auteur d'origine	Peter Checkland	Norman Dalkey & Olaf Helmer (RAND Corporation)
Type	Interpretive problem-structuring methodology	Structured iterative expert-elicitation process
Source fondatrice	Checkland, P. (1981). Systems Thinking, Systems Practice. Wiley. ISBN: 978-0-471-27911-2	Dalkey, N. & Helmer, O. (1963). An Experimental Application of the Delphi Method to the Use of Experts. Management Science, 9(3), 458-467.
Alias	SSM, Checkland's SSM, Soft Systems Analysis, Yumuşak Sistemler Metodolojisi	Delphi Yöntemi, Delphi technique, expert consensus method
Apparentées	3	5
Résumé	Soft Systems Methodology (SSM) is an interpretive, action-research approach for structuring and managing complex, ill-defined ('soft') problem situations involving human activity. Developed by Peter Checkland at Lancaster University throughout the 1970s and formally presented in 1981, SSM guides practitioners through iterative cycles of inquiry that move from an unstructured problem situation to purposeful action through structured learning rather than optimization.	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.