So sánh phương pháp

	Phân tích hình thái	TF-IDF
Lĩnh vực	Khai phá văn bản	Khai phá văn bản
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1980	1988
Người khởi xướng	M.F. Porter (Porter stemmer)	Salton & Buckley
Loại	Text-normalisation preprocessing task	Text vectorization / term-weighting scheme
Công trình gốc	Porter, M.F. (1980). An Algorithm for Suffix Stripping. Program, 14(3), 130-137.	Salton, G. & Buckley, C. (1988). Term-weighting approaches in automatic text retrieval. Information Processing & Management, 24(5), 513-523.
Tên gọi khác	stemming, lemmatization, Morfolojik Analiz ve Kök Bulma	term weighting, tf-idf weighting, TF-IDF Vektörizasyonu
Liên quan	4	3
Tóm tắt	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.	TF-IDF, introduced by Salton and Buckley (1988), is a term-weighting scheme that scores each word in a document by how often it appears there and how rare it is across the whole collection. It turns raw text into weighted document vectors, giving high weight to terms that are frequent in one document but uncommon elsewhere.