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Baum–Welch algorithm — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Baum%E2%80%93Welch_algorithm
License (as archived): CC-BY-SA-4.0
Archived: 2026-10-31T09:16:52.669Z
SHA-256 of the archived text: 9e7ef60b1692e2c4f7210e98b28119bfa8d206229e49b0b426ee3902b4f9cb1b
Stable URL of this page: https://metraipolis.com/documento/dc_7b28fa8c7f74

How to cite

Baum–Welch algorithm — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Baum%E2%80%93Welch_algorithm (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_7b28fa8c7f74 (Metraipolis archive dc_7b28fa8c7f74, sha256 9e7ef60b1692e2c4f7210e98b28119bfa8d206229e49b0b426ee3902b4f9cb1b)

BibTeX

@misc{dc7b28fa8c7f74,
  title = {Baum–Welch algorithm — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Baum%E2%80%93Welch_algorithm},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_7b28fa8c7f74; sha256 9e7ef60b1692e2c4f7210e98b28119bfa8d206229e49b0b426ee3902b4f9cb1b},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Baum%E2%80%93Welch_algorithm. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

In electrical engineering, statistical computing and bioinformatics, the Baum–Welch algorithm is a special case of the expectation–maximization algorithm used to find the unknown parameters of a hidden Markov model (HMM). It makes use of the forward-backward algorithm to compute the statistics for the expectation step. The Baum–Welch algorithm, the primary method for inference in hidden Markov models, is numerically unstable due to its recursive calculation of joint probabilities. As the number of variables grows, these joint probabilities become increasingly small, leading to the forward recursions rapidly approaching values below machine precision.

Tema degli esploratori: scienze della vita e salute (deposito sistematico; ricerca «bioinformatics»).
Fonte: Wikipedia in inglese, voce «Baum–Welch algorithm» — https://en.wikipedia.org/wiki/Baum%E2%80%93Welch_algorithm
Wikidata Q811478: «algorithm» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q811478
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Baum%E2%80%93Welch_algorithm?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1376705550, consultata il 2026-10-31T09:05:33.992Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: bf8f2f184053d805ec719dbf18a336ce58b6c975b8b8f514477b4622d1a26119