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	ソフトシステム方法論（SSM）	形態素解析
分野	問題構造化	テキストマイニング
系統	Process / pipeline	Process / pipeline
提唱年	1981	1980
提唱者	Peter Checkland	M.F. Porter (Porter stemmer)
種類	Interpretive problem-structuring methodology	Text-normalisation preprocessing task
原典	Checkland, P. (1981). Systems Thinking, Systems Practice. Wiley. ISBN: 978-0-471-27911-2	Porter, M.F. (1980). An Algorithm for Suffix Stripping. Program, 14(3), 130-137.
別名	SSM, Checkland's SSM, Soft Systems Analysis, Yumuşak Sistemler Metodolojisi	stemming, lemmatization, Morfolojik Analiz ve Kök Bulma
関連	3	4
概要	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.	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.