An EM algorithm for SCFG in formal syntax-based translation

@article{Huang2009AnEA,
  title={An EM algorithm for SCFG in formal syntax-based translation},
  author={Songfang Huang and Bowen Zhou},
  journal={2009 IEEE International Conference on Acoustics, Speech and Signal Processing},
  year={2009},
  pages={4813-4816}
}
In this paper, we investigate the use of bilingual parsing on parallel corpora to better estimate the rule parameters in a formal syntax-based machine translation system, which are normally estimated from the inaccurate heuristics. We use an Expectation-Maximization (EM) algorithm to re-estimate the parameters of synchronous context-free grammar (SCFG) rules according to the derivation knowledge from parallel corpora based on maximum likelihood principle, rather than using only the heuristic… CONTINUE READING

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