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| BERTopic× | Vložené reprezentácie BERT× | Analýza sentimentu× | |
|---|---|---|---|
| Odbor | Dolovanie textu | Dolovanie textu | Dolovanie textu |
| Rodina | Process / pipeline | Process / pipeline | Process / pipeline |
| Rok vzniku≠ | 2022 | 2019 | — |
| Tvorca≠ | Maarten Grootendorst | Devlin, Chang, Lee & Toutanova (Google AI) | — |
| Typ≠ | Neural topic-modeling pipeline | Contextual transformer text-representation method | NLP text-classification task |
| Pôvodný zdroj≠ | Grootendorst, M. (2022). BERTopic: Neural topic modeling with a class-based TF-IDF procedure. arXiv:2203.05794. DOI ↗ | Devlin, J., Chang, M.-W., Lee, K. & Toutanova, K. (2019). BERT: Pre-training of Deep Bidirectional Transformers for Language Understanding. NAACL-HLT, 4171-4186. DOI ↗ | Pang, B. & Lee, L. (2008). Opinion Mining and Sentiment Analysis. Foundations and Trends in Information Retrieval, 2(1-2), 1-135. DOI ↗ |
| Ďalšie názvy | neural topic modeling, transformer topic modeling, Konu Modelleme — BERTopic | contextual embeddings, transformer embeddings, BERT Tabanlı Metin Gömülmeleri | opinion mining, polarity detection, duygu analizi |
| Príbuzné≠ | 3 | 4 | 3 |
| Zhrnutie≠ | BERTopic is a neural topic-modeling pipeline introduced by Maarten Grootendorst in 2022. It combines BERT-based contextual embeddings with UMAP dimensionality reduction and HDBSCAN clustering to produce coherent, dynamic topics, achieving higher topic coherence than classic topic models. | 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. | 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. |
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