Earlier approaches for linguistic syntax-based translation such as (Yamada and Knight, 2001;Galley et al., 2006;Huang et al., 2006;Liu et al., 2006) focus on memorising and reusing parts of the structure of the source and/or target parse trees and constraining decoding by the input parse tree.
to this approach, we choose to employ linguistic annotations in the form of unambiguous synchronous span labels, while discovering ambiguous translation structure taking advantage of them.