Módszerek összehasonlítása

	Szóalapú véleményelemzés	Szöveges hangulatelemzés	Szubjektivitás detektálása – Objektív vs. Szubjektív szöveg
Tudományterület	Szövegbányászat	Szövegbányászat	Szövegbányászat
Módszercsalád	Process / pipeline	Process / pipeline	Process / pipeline
Keletkezés éve	—	—	—
Megalkotó	—	—	—
Típus	Lexicon-based NLP sentiment-scoring task	NLP text-classification task	NLP text-classification task
Alapmű	Nielsen, F.Å. (2011). A New ANEW: Evaluation of a Word List for Sentiment Analysis in Microblogs. Proceedings of the ESWC Workshop on 'Making Sense of Microposts'.	Pang, B. & Lee, L. (2008). Opinion Mining and Sentiment Analysis. Foundations and Trends in Information Retrieval, 2(1-2), 1-135.	Wiebe, J., Wilson, T. & Cardie, C. (2005). Annotating Expressions of Opinions and Emotions in Language. Language Resources and Evaluation, 39(2-3), 165-210.
Alternatív nevek	dictionary-based sentiment analysis, rule-based sentiment scoring, Sözlük Tabanlı Duygu Analizi	opinion mining, polarity detection, duygu analizi	subjective vs objective classification, subjectivity classification, Öznellik Tespiti (Subjectivity Detection)
Kapcsolódó	3	3	3
Összefoglaló	Lexicon-based sentiment analysis computes sentiment at the word level using prebuilt sentiment dictionaries such as AFINN (Nielsen, 2011), SentiWordNet, VADER (Hutto & Gilbert, 2014), and the NRC Emotion Lexicon. It scores text by looking words up in a dictionary of charged terms, so it requires no labelled training data.	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.	Subjectivity detection is a natural-language-processing task that classifies whether a sentence or document conveys objective (neutral information) or subjective (personal opinion, emotion) content. Grounded in the opinion-annotation work of Wiebe and colleagues (2005) and Pang and Lee (2004), it is most often used as a preliminary step before sentiment analysis.