Theory of Alignment Generators and Applications to Statistical Machine Translation

@inproceedings{Udupa2005TheoryOA,
  title={Theory of Alignment Generators and Applications to Statistical Machine Translation},
  author={Raghavendra Udupa and Hemanta K. Maji},
  booktitle={IJCAI},
  year={2005}
}
Viterbi AlignmentandDecodingare two fundamental search problems in Statistical Machine Translation. Both the problems are known to be NPhard and therefore, it is unlikely that there exists an optimal polynomial time algorithm for either of these search problems. In this paper we characterize exponentially large subspaces in the solution space ofViterbi Alignmentand Decoding. Each of these subspaces admits polynomial time optimal search algorithms. We propose a local search heuristic using a… CONTINUE READING