Wednesday 3 August 2011

Open Source Machine Translation System Combination

Intro

MANY is an MT system combination software which architecture is described is the following picture :


The combination can be decomposed into three steps

  • 1-best hypotheses from all M systems are aligned in order to build M confusion networks (one for each system considered as backbone).
  • All CNs are connected into a single lattice. The first nodes of each CN are connected to a unique first node with probabilities equal to the priors probabilities assigned to the corresponding backbone. The final nodes are connected to a single final node with arc probability of one.
  • A token pass decoder is used along with a language model to decode the resulting lattice and the best hypothesis is generated.

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Cheers,
Vu

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