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<Paper uid="W06-3115">
  <Title>NTT System Description for the WMT2006 Shared Task</Title>
  <Section position="1" start_page="0" end_page="0" type="abstr">
    <SectionTitle>
Abstract
</SectionTitle>
    <Paragraph position="0"> We present two translation systems experimented for the shared-task of &amp;quot;Workshop on Statistical Machine Translation,&amp;quot; a phrase-based model and a hierarchical phrase-based model. The former uses a phrasal unit for translation, whereas the latter is conceptualized as a synchronous-CFG in which phrases are hierarchically combined using non-terminals. Experiments showed that the hierarchical phrase-based model performed very comparable to the phrase-based model. We also report a phrase/rule extraction technique differentiating tokenization of corpora.</Paragraph>
  </Section>
class="xml-element"></Paper>