期刊名称：Conference on European Chapter of the Association for Computational Linguistics (EACL)
出版年度：2009
卷号：2009
出版社：ACL Anthology
摘要：We describe refinements to hierarchical
translation search procedures intended to
reduce both search errors and memory usage
through modifications to hypothesis
expansion in cube pruning and reductions
in the size of the rule sets used in translation.
Rules are put into syntactic classes
based on the number of non-terminals and
the pattern, and various filtering strategies
are then applied to assess the impact
on translation speed and quality. Results
are reported on the 2008 NIST Arabic-to-
English evaluation task.
