Annotating semantic relations combining facts and opinions

Koji Murakami, Shouko Masuda, Suguru Matsuyoshi, Eric Nichols, Kentaro Inui, Yuji Matsumoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)


As part of the STATEMENT MAP project, we are constructing a Japanese corpus annotated with the semantic relations bridging facts and opinions that are necessary for online information credibility evaluation. In this paper, we identify the semantic relations essential to this task and discuss how to efficiently collect valid examples from Web documents by splitting complex sentences into fundamental units of meaning called "statements" and annotating relations at the statement level. We present a statement annotation scheme and examine its reliability by annotating around 1,500 pairs of statements. We are preparing the corpus for release this winter.

Original languageEnglish
Title of host publicationACL-IJCNLP 2009 - LAW 2009
Subtitle of host publication3rd Linguistic Annotation Workshop, Proceedings
PublisherAssociation for Computational Linguistics (ACL)
Number of pages4
ISBN (Print)1932432523, 9781932432527
Publication statusPublished - 2009
Externally publishedYes
Event3rd Linguistic Annotation Workshop, LAW 2009 - Suntec, Singapore
Duration: 2009 Aug 62009 Aug 7

Publication series

NameACL-IJCNLP 2009 - LAW 2009: 3rd Linguistic Annotation Workshop, Proceedings


Other3rd Linguistic Annotation Workshop, LAW 2009

ASJC Scopus subject areas

  • Language and Linguistics
  • Linguistics and Language


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