Type

Conference Proceedings

Authors

Andy Way
Khalil Sima'an
Gideon Maillette de Buy Wenniger

Subjects

Computer Science

Topics
search hierarchical statistical machine translation diversity implementation smt elastic machine translating labels

Elastic-substitution decoding for hierarchical SMT: efficiency, richer search and double labels (2017)

Abstract Elastic-substitution decoding (ESD), first introduced by Chiang (2010), can be important for obtaining good results when applying labels to enrich hierarchical statistical machine translation (SMT). However, an efficient implementation is essential for scalable application. We describe how to achieve this, contributing essential details that were missing in the original exposition. We compare ESD to strict matching and show its superiority for both reordering and syntactic labels. To overcome the sub-optimal performance due to the late evaluation of features marking label substitution types, we increase the diversity of the rules explored during cube pruning initialization with respect to labels their labels. This approach gives significant improvements over basic ESD and performs favorably compared to extending the search by increasing the cube pruning pop-limit. Finally, we look at combining multiple labels. The combination of reordering labels and target-side boundary-tags yields a significant improvement in terms of the word-order sensitive metrics Kendall reordering score and METEOR. This confirms our intuition that the combination of reordering labels and syntactic labels can yield improvements over either label by itself, despite increased sparsity.
Collections Ireland -> Dublin City University -> Publication Type = Conference or Workshop Item
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Engineering and Computing: School of Computing
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> Subject = Computer Science: Machine translating
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres: Advanced Processing Technology Research Centre (APTRC)

Full list of authors on original publication

Andy Way, Khalil Sima'an, Gideon Maillette de Buy Wenniger

Experts in our system

1
Andy Way
Dublin City University
Total Publications: 229
 
2
Khalil Sima'an
Dublin City University
Total Publications: 7
 
3
Gideon Maillette de Buy Wenniger
Dublin City University
Total Publications: 6