Comparer des méthodes

	Analyse du discours	Théorie ancrée	Analyse des sentiments
Domaine	Recherche qualitative	Recherche qualitative	Fouille de textes
Famille	Process / pipeline	Process / pipeline	Process / pipeline
Année d'origine	1989 (Fairclough); 1987 (Potter & Wetherell)	1967	—
Auteur d'origine	Norman Fairclough; Jonathan Potter and Margaret Wetherell	Barney Glaser and Anselm Strauss	—
Type	Method	Method	NLP text-classification task
Source fondatrice	Fairclough, N. (1989). Language and power. Longman.	Glaser, B. G., & Strauss, A. L. (1967). The discovery of grounded theory: Strategies for qualitative research. Aldine.	Pang, B. & Lee, L. (2008). Opinion Mining and Sentiment Analysis. Foundations and Trends in Information Retrieval, 2(1-2), 1-135.
Alias	DA, Critical Discourse Analysis, Discursive Analysis	GT, Grounded Theory Approach	opinion mining, polarity detection, duygu analizi
Apparentées	2	3	3
Résumé	Discourse analysis is a qualitative research methodology that examines how language, communication, and power shape meaning, identity, and social reality. Developed across linguistics, sociology, and psychology (particularly by Norman Fairclough and Jonathan Potter), discourse analysis goes beyond content to analyze language use as a social practice that constitutes and reflects power relations, ideologies, and social structures.	Grounded Theory (GT) is a systematic qualitative research methodology in which theory emerges directly from data through iterative analysis, rather than being imposed before data collection. Developed by Barney Glaser and Anselm Strauss in 1967, GT prioritizes generating explanatory frameworks grounded in evidence.	Sentiment analysis, also called opinion mining, is a natural-language-processing task that detects the emotional tone of text — typically classifying it as positive, negative, or neutral. It turns unstructured opinion text into structured, quantifiable polarity signals using one of three families of approaches: sentiment lexicons, trained machine-learning classifiers, or pretrained transformer models.