Σύγκριση μεθόδων

	TF-IDF	Θεματική Ανάλυση
Πεδίο	Εξόρυξη Κειμένου	Ποιοτική Έρευνα
Οικογένεια	Process / pipeline	Process / pipeline
Έτος προέλευσης	1988	2006
Δημιουργός	Salton & Buckley	Virginia Braun and Victoria Clarke
Τύπος	Text vectorization / term-weighting scheme	Method
Θεμελιώδης πηγή	Salton, G. & Buckley, C. (1988). Term-weighting approaches in automatic text retrieval. Information Processing & Management, 24(5), 513-523.	Braun, V., & Clarke, V. (2006). Using thematic analysis in psychology. Qualitative Research in Psychology, 3(2), 77–101.
Εναλλακτικές ονομασίες	term weighting, tf-idf weighting, TF-IDF Vektörizasyonu	TA, Reflexive Thematic Analysis
Συναφείς	3	3
Σύνοψη	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.	Thematic Analysis (TA) is a qualitative research methodology for identifying, analyzing, and reporting patterns (themes) in qualitative data. Developed systematically by Virginia Braun and Victoria Clarke (2006), TA is flexible and accessible, applicable across diverse theoretical frameworks and data types, making it one of the most widely used qualitative methods in psychology, health research, and social sciences.