期刊名称：Conference on European Chapter of the Association for Computational Linguistics (EACL)
出版年度：2010
卷号：2010
出版社：ACL Anthology
摘要：This paper presents a novel filtration criterion
to restrict the rule extraction for
the hierarchical phrase-based translation
model, where a bilingual but relaxed wellformed
dependency restriction is used to
filter out bad rules. Furthermore, a new
feature which describes the regularity that
the source/target dependency edge triggers
the target/source word is also proposed.
Experimental results show that, the
new criteria weeds out about 40% rules
while with translation performance improvement,
and the new feature brings another
improvement to the baseline system,
especially on larger corpus.
