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Sixth Workshop on Syntax, Semantics and Structure in Statistical Translation (SSST-6)

Workshop at Association for Computational Linguistics, 2012-07-12, Jeju Island, Corea. (This workshop is endorsed by SIGLEX.) (90)

The Sixth Workshop on Syntax, Semantics and Structure in Statistical Translation (SSST-6) seeks to build on the foundations established in the first five SSST workshops, which brought together a large number of researchers working on diverse aspects of structure, semantics and representation in relation to statistical machine translation. Its program each year has comprised high-quality papers discussing current work spanning topics including: new grammatical models of translation; new learning methods for syntax- and semantics-based models; formal properties of synchronous/transduction grammars (hereafter S/TGs); discriminative training of models incorporating linguistic features; using S/TGs for semantics and generation; and syntax- and semantics-based evaluation of machine translation. The need for structural mappings between languages is widely recognized in the fields of statistical machine translation and spoken language translation, and there is a growing consensus that these mappings are appropriately represented using a family of formalisms that includes synchronous/transduction grammars and their tree-transducer equivalents. To date, flat-structured models, such as the word-based IBM models of the early 1990s or the more recent phrase-based models, remain widely used. But tree-structured mappings arguably offer a much greater potential for learning valid generalizations about relationships between languages. Within this area of research there is a rich diversity of approaches. There is active research ranging from formal properties of S/TGs to large-scale end-to-end systems. There are approaches that make heavy use of linguistic theory, and approaches that use little or none. There is theoretical work characterizing the expressiveness and complexity of particular formalisms, as well as empirical work assessing their modeling accuracy and descriptive adequacy across various language pairs. There is work being done to invent better translation models, and work to design better algorithms. Recent years have seen significant progress on all these fronts. In particular, systems based on these formalisms are now top contenders in MT evaluations. At the same time, SMT has seen a movement toward semantics over the past few years, which has been reflected at recent SSST workshops, including the last edition which had semantics for SMT as a special theme. The issues of deep syntax and shallow semantics are closely linked and SSST-6 encourages submissions on semantics for MT in a number of directions, including semantic role labeling (SRL) for SMT, WSD for SMT and in particular, semantics for MT evaluation. In order to emphasize the need to evaluate MT in a way that properly assesses preservation of structure and semantics, SSST-6 is highlighting Semantic MT Evaluation as a special workshop theme.