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| Topic modeling con NMF× | BERTopic× | |
|---|---|---|
| Campo | Text mining | Text mining |
| Famiglia | Process / pipeline | Process / pipeline |
| Anno di origine≠ | 1999 | 2022 |
| Ideatore≠ | Lee & Seung | Maarten Grootendorst |
| Tipo≠ | Matrix-factorization topic model | Neural topic-modeling pipeline |
| Fonte seminale≠ | Lee, D.D. & Seung, H.S. (1999). Learning the Parts of Objects by Non-negative Matrix Factorization. Nature, 401, 788-791. DOI ↗ | Grootendorst, M. (2022). BERTopic: Neural topic modeling with a class-based TF-IDF procedure. arXiv:2203.05794. DOI ↗ |
| Alias | non-negative matrix factorization topic modeling, NMF topics, Konu Modelleme — NMF | neural topic modeling, transformer topic modeling, Konu Modelleme — BERTopic |
| Correlati≠ | 4 | 3 |
| Sintesi≠ | NMF topic modeling uses Non-negative Matrix Factorization — the parts-based decomposition introduced by Lee and Seung (1999) — to extract document-topic distributions from a corpus. By factoring a document-term matrix into two non-negative matrices, it recovers a small set of topics and tends to produce more interpretable topics than LDA. | 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. |
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