Vertaile menetelmiä

	Sisällönanalyysi – Tekstin ja median systemaattinen koodaus	Sentiment Analysis
Tieteenala	Laadulliset menetelmät	Tekstinlouhinta
Menetelmäperhe	Process / pipeline	Process / pipeline
Syntyvuosi	Systematised through Krippendorff's methodology work; 4th edition 2018	—
Kehittäjä	Klaus Krippendorff (systematic formulation); roots in early 20th-century communications research	—
Tyyppi	Qualitative / mixed-method research technique	NLP text-classification task
Alkuperäislähde	Krippendorff, K. (2018). Content Analysis: An Introduction to Its Methodology (4th ed.). Sage. ISBN: 978-1506395661	Pang, B. & Lee, L. (2008). Opinion Mining and Sentiment Analysis. Foundations and Trends in Information Retrieval, 2(1-2), 1-135.
Rinnakkaisnimet	İçerik Analizi, systematic content coding, quantitative content analysis	opinion mining, polarity detection, duygu analizi
Liittyvät	5	3
Tiivistelmä	Content analysis is a systematic research technique for reducing text, visual, or media material into coded categories so that patterns can be counted, compared, and interpreted. Formalised by Klaus Krippendorff in his widely cited methodology textbook (latest edition 2018), the method sits at the boundary of qualitative and quantitative inquiry: it imposes structured, replicable coding on inherently meaning-laden material.	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.