[Corpora-List] Call for Participation: Opinion Analysis Task at NTCIR-6

[Hsin-Hsi Chen]

Call for Participation
Opinion Analysis Task at NTCIR Workshop 6

1. Introduction
　　Opinion Analysis is a pilot task in the series of NTCIR Workshops.  In 
recent years, several important conferences such as AAAI, ACL, COLING, 
SIGIR, WWW, etc., have published works on opinion extraction, sentiment, and 
subjective information analysis.  However, no common platform for languages 
other than English exists that can be used to evaluate these technologies. 
In 2005, the open submission session at NTCIR-5 collected researchers’ 
comments about a new pilot task.  This pilot task aims to build 
Chinese/English/Japanese opinion extraction corpora based on the past NTCIR 
CLIR test collections, and to promote investigation of opinionated 
information access.
　　Opinion extraction is one of the kernel technologies related to opinion 
analysis tasks.  In this pilot task, Chinese/English/Japanese sentences are 
the basic units for extraction and relevance judgments.  Opinions and the 
opinion holders are the information we focus on.  The test collection 
consists of topics and the relevant documents.  For each topic and the 
corresponding relevant documents, participants have to report which 
sentences have subjective information relevant to the designated topic, 
their polarity, and the “explicit” opinion holder.    The detail 
call-for-participation can be found at 
http://research.nii.ac.jp/ntcir/ntcir-ws6/opinion/index-en.html
　　If you are interested in this task, please join the discussion about 
task description through the mailing list by just write an email to the 
organizer at opinion-admin @nii.ac.jp, or send an email with the command 
“subscribe ntc-opinion @nii.ac.jp” to majordomo @nii.ac.jp in the message 
body.

2. How to Participate and Register
　　Participation and registration information is available on the web at: 
http://research.nii.ac.jp/ntcir/ntcir-ws6/howto-en.html

3. Schedule
2006-08-01: Start of Registration
2006-09-30: Registration Due
2006-10-16 Test set release,
2006-10-31 Results submission
2007-02 Evaluation results
2007-03 Paper submission deadline
2007-05-15 to 18 NTCIR6 Conference, Tokyo, Japan (see also 
http://research.nii.ac.jp/ntcir/ntcir-ws6/important_dates-en.html)

4. Task Organizers (in alphabetic order)
Hsin-Hsi Chen (co-chairs), National Taiwan University, Taiwan
David Kirk Evans, National Institute of Informatics, Japan
Noriko Kando (co-chairs), National Institute of Informatics, Japan
Lun-Wei Ku, National Taiwan University, Taiwan
Chin-Yew Lin, Microsoft Research Asia, China
Yohei Seki, Toyohashi University of Technology, Japan 
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