411 REFERENCE · Wikibooks
Machine Translation/Statistics
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Statistical machine translation
Language models
Language models are used in MT for a) scoring arbitrary sequences of words (tokens) and b) given a sequence of tokens, they predict what token will likely to follow the sequence. Formally, language models are probability distributions over sequences of tokens in a given language.
N-gram models
Character-based models
Recently, it was shown that it is possible to use sub-words, characters or even bytes as basic units for language modelling.
There are a few events focused particularly on such models and in general, processing language data on sub-word units, e.g. SCLem 2017.
Translation models
IBM models 1-5
Phrase-based models
Factored translation models
Syntax- and tree-based models
Synchronous phrase grammar
Parallel tree-banks
Syntactic rules extraction
Decoding
Beam search
Hybrid systems
Computer-aided translation
Translation memory