Porovnat metody
Prohlédněte si vybrané metody vedle sebe; řádky, které se liší, jsou zvýrazněny.
| Šíření očekávání (EP)× | Latent Dirichlet Allocation (LDA)× | Markov Chain Monte Carlo (MCMC)× | |
|---|---|---|---|
| Obor≠ | Bayesovská statistika | Strojové učení | Bayesovská statistika |
| Rodina≠ | Bayesian methods | Latent structure | Bayesian methods |
| Rok vzniku≠ | 2001 | 2003 | — |
| Tvůrce≠ | Thomas P. Minka | Blei, D. M.; Ng, A. Y.; Jordan, M. I. | — |
| Typ≠ | Approximate inference algorithm | Generative probabilistic topic model (three-level hierarchical Bayesian) | Posterior sampling algorithm |
| Původní zdroj≠ | Minka, T. P. (2001). Expectation propagation for approximate Bayesian inference. In Proceedings of the Seventeenth Conference on Uncertainty in Artificial Intelligence (UAI-01), pp. 362–369. Morgan Kaufmann. link ↗ | Blei, D. M., Ng, A. Y., & Jordan, M. I. (2003). Latent Dirichlet allocation. Journal of Machine Learning Research, 3, 993–1022. DOI ↗ | Gelman, A., Carlin, J. B., Stern, H. S., Dunson, D. B., Vehtari, A. & Rubin, D. B. (2013). Bayesian Data Analysis (3rd ed.). CRC Press. ISBN: 978-1439840955 |
| Další názvy≠ | EP, expectation propagation, EP algorithm, assumed-density filtering generalisation | LDA, topic model, Blei-Ng-Jordan model, probabilistic topic modeling | markov chain monte carlo, MCMC sampling, MCMC (Markov Zinciri Monte Carlo) |
| Příbuzné | 3 | 3 | 3 |
| Shrnutí≠ | Expectation Propagation (EP) is a deterministic message-passing algorithm for approximate posterior inference in Bayesian models, introduced by Thomas P. Minka at UAI 2001. It iteratively refines a set of local approximate factors — each drawn from the exponential family — so that their product closely matches the true intractable posterior, achieving higher accuracy than mean-field variational inference on many probabilistic machine learning tasks. | 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. | Markov Chain Monte Carlo (MCMC) is a family of computational algorithms for sampling from complex probability distributions, most commonly the posterior distributions that arise in Bayesian inference. Rather than computing posteriors analytically — which is rarely possible for realistic models — MCMC constructs a Markov chain whose stationary distribution is the target posterior and draws dependent samples from it, enabling full probabilistic inference for virtually any model. |
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