เปรียบเทียบวิธี

	Sentiment Analysis in Communication	Manifest Content Analysis
สาขาวิชา	Communication	Communication
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	2010	1952
ผู้ริเริ่ม	Adapted into communication research from NLP / opinion mining	Bernard Berelson; codified by Klaus Krippendorff
ประเภท	Automated classification of message valence/tone	Systematic quantitative coding of explicit message content
แหล่งต้นตำรับ	Tausczik, Y. R., & Pennebaker, J. W. (2010). The psychological meaning of words: LIWC and computerized text analysis methods. Journal of Language and Social Psychology, 29(1), 24–54.	Krippendorff, K. (2004). Content Analysis: An Introduction to Its Methodology (2nd ed.). Thousand Oaks, CA: Sage. ISBN: 9780761915454
ชื่อเรียกอื่น	Opinion mining in communication, Tone analysis, Media sentiment analysis, İletişimde Duygu Analizi	Quantitative manifest coding, Surface-content analysis, Manifest-level content analysis, Berelson content analysis
ที่เกี่ยวข้อง	5	5
สรุป	Sentiment analysis is the automated estimation of the valence — positive, negative, or neutral tone — of communication messages, adapted from natural-language processing into a core measurement technique for media and communication research. It lets scholars quantify the tone of news coverage, the affect of social-media discourse, or audience reactions across corpora far too large for hand coding, while treating tone as a measurable, validatable construct.	Manifest content analysis is a quantitative research technique that systematically counts the explicit, surface-level features of communication messages — words, sources, themes, images, or actors that are directly visible in the text or media artifact — according to a predefined coding scheme. Rooted in Bernard Berelson's classic definition of content analysis as the 'objective, systematic, and quantitative description of the manifest content of communication,' it is one of the foundational empirical methods of mass communication and media research.