手法を比較

	比較言語学的方法	グロットクロノロジー（Glottochronology）	形態素解析
分野	言語学	言語学	テキストマイニング
系統	Process / pipeline	Process / pipeline	Process / pipeline
提唱年	1786	1950	1980
提唱者	Sir William Jones	Morris Swadesh	M.F. Porter (Porter stemmer)
種類	Empirical process pipeline	Empirical process pipeline	Text-normalisation preprocessing task
原典	Hock, H. H. (1991). Principles of Historical Linguistics (2nd ed.). Berlin: Mouton de Gruyter.	Swadesh, M. (1950). Salish internal relationships. International Journal of American Linguistics, 16(3), 157-167.	Porter, M.F. (1980). An Algorithm for Suffix Stripping. Program, 14(3), 130-137.
別名	Historical Comparative Linguistics, Genetic Linguistics	Lexicostatistics, Glottochronological Dating	stemming, lemmatization, Morfolojik Analiz ve Kök Bulma
関連	4	2	4
概要	The Comparative Method is a foundational technique in historical linguistics for reconstructing ancestral languages and establishing genetic relationships between related languages. Pioneered by Sir William Jones in 1786, it systematically compares phonological, morphological, and lexical features across languages to identify regular sound correspondences and trace their shared origins. This method underpins modern historical linguistics and has been essential for understanding language families worldwide.	Glottochronology, or lexicostatistics, is a quantitative method in historical linguistics that estimates the time of divergence between related languages based on the proportion of shared cognates in their basic vocabularies. Developed by Morris Swadesh in 1950, the method assumes that core vocabulary items change at a relatively constant rate over time, allowing linguists to calculate a 'time depth'—how long ago two languages shared a common ancestor. Though controversial due to its restrictive assumptions, glottochronology provides rough temporal estimates when archaeological or written records are unavailable.	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.