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<DIV>Call for Participation<BR>Opinion Analysis Task at NTCIR Workshop
6<BR><BR>1. Introduction<BR>ˇ@ˇ@Opinion Analysis is a pilot task in the series of
NTCIR Workshops. In <BR>recent years, several important conferences such
as AAAI, ACL, COLING, <BR>SIGIR, WWW, etc., have published works on opinion
extraction, sentiment, and <BR>subjective information analysis. However,
no common platform for languages <BR>other than English exists that can be used
to evaluate these technologies. <BR>In 2005, the open submission session at
NTCIR-5 collected researchersˇ¦ <BR>comments about a new pilot task. This
pilot task aims to build <BR>Chinese/English/Japanese opinion extraction corpora
based on the past NTCIR <BR>CLIR test collections, and to promote investigation
of opinionated <BR>information access.<BR>ˇ@ˇ@Opinion extraction is one of the
kernel technologies related to opinion <BR>analysis tasks. In this pilot
task, Chinese/English/Japanese sentences are <BR>the basic units for extraction
and relevance judgments. Opinions and the <BR>opinion holders are the
information we focus on. The test collection <BR>consists of topics and
the relevant documents. For each topic and the <BR>corresponding relevant
documents, participants have to report which <BR>sentences have subjective
information relevant to the designated topic, <BR>their polarity, and the
ˇ§explicitˇ¨ opinion holder. The detail
<BR>call-for-participation can be found at <BR><A
href="http://research.nii.ac.jp/ntcir/ntcir-ws6/opinion/index-en.html">http://research.nii.ac.jp/ntcir/ntcir-ws6/opinion/index-en.html</A><BR>ˇ@ˇ@If
you are interested in this task, please join the discussion about <BR>task
description through the mailing list by just write an email to the <BR>organizer
at opinion-admin @nii.ac.jp, or send an email with the command <BR>ˇ§subscribe
ntc-opinion @nii.ac.jpˇ¨ to majordomo @nii.ac.jp in the message
<BR>body.<BR><BR>2. How to Participate and Register<BR>ˇ@ˇ@Participation and
registration information is available on the web at: <BR><A
href="http://research.nii.ac.jp/ntcir/ntcir-ws6/howto-en.html">http://research.nii.ac.jp/ntcir/ntcir-ws6/howto-en.html</A><BR><BR>3.
Schedule<BR>2006-08-01: Start of Registration<BR>2006-09-30: Registration
Due<BR>2006-10-16 Test set release,<BR>2006-10-31 Results submission<BR>2007-02
Evaluation results<BR>2007-03 Paper submission deadline<BR>2007-05-15 to 18
NTCIR6 Conference, Tokyo, Japan (see also <BR><A
href="http://research.nii.ac.jp/ntcir/ntcir-ws6/important_dates-en.html">http://research.nii.ac.jp/ntcir/ntcir-ws6/important_dates-en.html</A>)<BR><BR>4.
Task Organizers (in alphabetic order)<BR>Hsin-Hsi Chen (co-chairs), National
Taiwan University, Taiwan<BR>David Kirk Evans, National Institute of
Informatics, Japan<BR>Noriko Kando (co-chairs), National Institute of
Informatics, Japan<BR>Lun-Wei Ku, National Taiwan University, Taiwan<BR>Chin-Yew
Lin, Microsoft Research Asia, China<BR>Yohei Seki, Toyohashi University of
Technology, Japan </DIV></BODY></HTML>