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| Modelització de temes multimodal× | Model de tema NMF× | |
|---|---|---|
| Camp | Aprenentatge profund | Aprenentatge profund |
| Família | Machine learning | Machine learning |
| Any d'origen≠ | 2003–present | 1999 |
| Autor original≠ | Blei, D. M. & Jordan, M. I. (foundational corr-LDA); extended by many authors | Lee, D. D. & Seung, H. S. |
| Tipus≠ | Generative probabilistic topic model | Matrix factorization / unsupervised topic model |
| Font seminal≠ | Blei, D. M., & Jordan, M. I. (2003). Modeling annotated data. Proceedings of the 26th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 127–134. DOI ↗ | Lee, D. D., & Seung, H. S. (1999). Learning the parts of objects by non-negative matrix factorization. Nature, 401(6755), 788–791. DOI ↗ |
| Àlies | Multimodal LDA, multi-modal topic model, cross-modal topic modeling, MM-TM | NMF, Non-negative Matrix Factorization, NMF for Topic Modeling, NNMF Topic Model |
| Relacionats≠ | 6 | 4 |
| Resum≠ | Multimodal topic modeling discovers latent thematic structure shared across multiple data modalities — for example, co-occurring words and images — by learning a joint probabilistic representation that aligns topics across modalities. It extends classical text-only approaches such as LDA to settings where each document or observation consists of heterogeneous data types. | Non-negative Matrix Factorization (NMF) is an unsupervised matrix decomposition method that discovers latent topics in a text corpus by factoring a document-term matrix into two non-negative matrices — one encoding topic-word weights, the other document-topic weights. The non-negativity constraint yields parts-based, additive representations that tend to produce clean, interpretable topics. |
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