手法を比較

	戦略的選択アプローチ	形態素解析	ソフトシステム方法論（SSM）
分野	問題構造化	テキストマイニング	問題構造化
系統	Process / pipeline	Process / pipeline	Process / pipeline
提唱年	2005	1980	1981
提唱者	John Friend & Allen Hickling	M.F. Porter (Porter stemmer)	Peter Checkland
種類	Iterative group-based problem structuring and decision process	Text-normalisation preprocessing task	Interpretive problem-structuring methodology
原典	Friend, J., & Hickling, A. (2005). Planning Under Pressure: The Strategic Choice Approach (3rd ed.). Elsevier. ISBN: 978-0-7506-6373-2	Porter, M.F. (1980). An Algorithm for Suffix Stripping. Program, 14(3), 130-137.	Checkland, P. (1981). Systems Thinking, Systems Practice. Wiley. ISBN: 978-0-471-27911-2
別名	SCA, Planning Under Pressure, Stratejik Seçim Yaklaşımı, Interactive Strategic Planning	stemming, lemmatization, Morfolojik Analiz ve Kök Bulma	SSM, Checkland's SSM, Soft Systems Analysis, Yumuşak Sistemler Metodolojisi
関連	2	4	3
概要	The Strategic Choice Approach (SCA) is an interactive, workshop-based problem structuring method developed by John Friend and Allen Hickling, first published in 1987 and refined in the definitive third edition of Planning Under Pressure (2005). SCA helps groups of planners and stakeholders manage interconnected decisions under uncertainty by explicitly mapping decision areas, option combinations, and sources of uncertainty before committing to action.	Morphological analysis splits words into their stems and affixes so that different surface forms of the same word can be treated as one. It covers two complementary approaches — rule-based stemming, such as the Porter (1980) and Snowball algorithms, and dictionary-aware lemmatization — and is a critical text-normalisation step for agglutinative languages such as Turkish and Arabic.	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.