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| Latent Dirichlet Allocation (LDA)× | Non-negativ Matrixfaktorisering (NMF)× | Word2Vec× | |
|---|---|---|---|
| Fagområde≠ | Maskinlæring | Maskinlæring | Tekstmining |
| Familie≠ | Latent structure | Latent structure | Process / pipeline |
| Oprindelsesår≠ | 2003 | 1999 | 2013 |
| Ophavsperson≠ | Blei, D. M.; Ng, A. Y.; Jordan, M. I. | Lee, D. D. & Seung, H. S. | Tomas Mikolov et al. |
| Type≠ | Generative probabilistic topic model (three-level hierarchical Bayesian) | Matrix decomposition with non-negativity constraints | Neural word-embedding model |
| Oprindelig kilde≠ | Blei, D. M., Ng, A. Y., & Jordan, M. I. (2003). Latent Dirichlet allocation. Journal of Machine Learning Research, 3, 993–1022. DOI ↗ | Lee, D. D., & Seung, H. S. (1999). Learning the parts of objects by non-negative matrix factorization. Nature, 401(6755), 788–791. DOI ↗ | Mikolov, T., Chen, K., Corrado, G. & Dean, J. (2013). Efficient Estimation of Word Representations in Vector Space. link ↗ |
| Aliasser≠ | LDA, topic model, Blei-Ng-Jordan model, probabilistic topic modeling | NMF, NNMF, nonnegative matrix factorization, non-negative matrix approximation | word embeddings, skip-gram, continuous bag-of-words, Word2Vec Kelime Gömülmeleri |
| Relaterede≠ | 3 | 4 | 4 |
| Resumé≠ | Latent Dirichlet Allocation (LDA) is a generative probabilistic model for collections of discrete data, introduced by Blei, Ng, and Jordan in 2003. It treats each document as a mixture of latent topics and each topic as a probability distribution over words, enabling unsupervised discovery of thematic structure across large text corpora. It is one of the most cited papers in machine learning and natural language processing. | Non-negative Matrix Factorization (NMF) is a family of algorithms, introduced by Lee and Seung in their landmark 1999 Nature paper, that decomposes a non-negative data matrix V into the product of two lower-rank non-negative matrices W (basis components) and H (encoding coefficients). Unlike PCA or SVD, the non-negativity constraint forces the algorithm to learn strictly additive, parts-based representations, making the factors directly interpretable as building blocks of the original data. | Word2Vec is a neural word-embedding technique introduced by Mikolov and colleagues in 2013 that maps each word in a text corpus to a dense numeric vector. Words that appear in similar contexts end up close together in the vector space, so the embeddings capture semantic similarity that can be measured arithmetically. |
| ScholarGateDatasæt ↗ |
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