Vertaile menetelmiä

	Asennon tunnistus	BERT-upotukset – kontekstisidonnaiset tekstiesitykset	Valheuutisten tunnistus – harhaanjohtavan tiedon luokittelu	Sentiment Analysis
Tieteenala	Tekstinlouhinta	Tekstinlouhinta	Tekstinlouhinta	Tekstinlouhinta
Menetelmäperhe	Process / pipeline	Process / pipeline	Process / pipeline	Process / pipeline
Syntyvuosi	2016	2019	—	—
Kehittäjä	Mohammad et al. (SemEval-2016 Task 6)	Devlin, Chang, Lee & Toutanova (Google AI)	—	—
Tyyppi	NLP text-classification task toward a target	Contextual transformer text-representation method	NLP text-classification task	NLP text-classification task
Alkuperäislähde	Mohammad, S. et al. (2016). SemEval-2016 Task 6: Detecting Stance in Tweets. Proceedings of SemEval-2016, 31-41.	Devlin, J., Chang, M.-W., Lee, K. & Toutanova, K. (2019). BERT: Pre-training of Deep Bidirectional Transformers for Language Understanding. NAACL-HLT, 4171-4186.	Shu, K. et al. (2017). Fake News Detection on Social Media. ACM SIGKDD.	Pang, B. & Lee, L. (2008). Opinion Mining and Sentiment Analysis. Foundations and Trends in Information Retrieval, 2(1-2), 1-135.
Rinnakkaisnimet	stance classification, stance identification, Tutum Tespiti (Stance Detection)	contextual embeddings, transformer embeddings, BERT Tabanlı Metin Gömülmeleri	misinformation detection, false news classification, automated fact checking, Yanlış/Sahte Haber Tespiti	opinion mining, polarity detection, duygu analizi
Liittyvät	4	4	4	3
Tiivistelmä	Stance detection is a natural-language-processing task that decides the position a text takes toward a specific claim, event, or topic — labelling it as favor, against, or neutral. Formalised by Mohammad et al. in the SemEval-2016 Task 6 shared task, it differs from plain sentiment analysis because the label is always relative to a defined target rather than the overall emotional tone of the text.	BERT-based text embeddings, introduced by Devlin and colleagues at Google AI in 2019, turn text into context-sensitive dense vectors using a bidirectional Transformer encoder. Because the meaning of a word shifts with its context, BERT produces richer representations than static methods such as Word2Vec or topic models like LDA.	Fake news detection is a natural-language-processing classification task that assesses the credibility of news text and labels content as fake or genuine. Building on the social-media framing of Shu et al. (2017) and the automated-fact-checking framing of Thorne and Vlachos (2018), it turns unstructured news articles into a supervised credibility decision learned from labelled examples.	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.