Compara mètodes

	Anàlisi del Discurs	Teoria Fonamentada	Anàlisi de sentiments
Camp	Recerca qualitativa	Recerca qualitativa	Mineria de text
Família	Process / pipeline	Process / pipeline	Process / pipeline
Any d'origen	1989 (Fairclough); 1987 (Potter & Wetherell)	1967	—
Autor original	Norman Fairclough; Jonathan Potter and Margaret Wetherell	Barney Glaser and Anselm Strauss	—
Tipus	Method	Method	NLP text-classification task
Font seminal	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.
Àlies	DA, Critical Discourse Analysis, Discursive Analysis	GT, Grounded Theory Approach	opinion mining, polarity detection, duygu analizi
Relacionats	2	3	3
Resum	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.