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[eu_members at aclweb dot org] Washington, DC: Fourth i2b2/VA Shared Task and Workshop: Challenges in NLP for Clinical Data -- Call

Fourth i2b2/VA Shared-Task and Workshop
Challenges in Natural Language Processing for Clinical Data

Data Release: 15 April, 2010
Evaluation: 15-18 July, 2010
Paper Submission: 1 September, 2010
Workshop: November, 2010 in Washington, DC

The fourth i2b2/VA challenge is a three tiered challenge that studies:
- extraction of medical problems, tests, and treatments
- classification of assertions made on medical problems
- relations of medical problems, tests, and treatments

The data for this challenge includes discharge summaries from Partners 
Healthcare and from Beth Israel Deaconess Medical Center, as well as 
discharge summaries and progress notes from University of Pittsburgh 
Medical Center. All records have been fully de-identified and manually 
annotated for concept, assertion, and relation information. 
Participants of the Fourth i2b2/VA Challenge can choose to tackle any 
or all of the tasks in any of the tiers.

The challenge registration starts on March 15, 2010 through 
https://i2b2.org/NLP. Training data for the challenge will be released 
in installments starting April 15, 2010. Test data are scheduled to be 
released in July 2010. The results of the challenge will be presented 
at the workshop organized by i2b2 and VA.

Data for the Fourth i2b2/VA Challenge will be released under a Data 
Use Agreement and are to be used for research only. Obtaining the data 
requires completing a registration through i2b2.org/NLP and signing 
the Data Use Agreement.

Evaluation Dates, File Formats, and Evaluation Metrics.

The Fourth i2b2/VA Challenge evaluation will be done using withheld 
test data. Participating teams are asked to stop development as soon 
as they download the test data. Each team is allowed to upload up to 
three system runs for each of the tiers of the challenge. System 
output is expected in the form of standoff annotations, following the 
exact format of the ground truth annotations provided by the 
organizers. Precision, recall, and f-measure will be used as 
evaluation metrics.

Participants are asked to submit a short paper describing their system 
and analyzing their performance. Papers should be in AMIA style and 
should not exceed five pages. Authors of top performing systems and of 
particularly novel approaches will be invited to present or demo their 
systems at the workshop.

Tentative Schedule
March 15, 2010 Registration Opens
April 15, 2010 Commitment to Participate in Challenge & Training Data Release
July 15, 2010 Test Data Release
September 1, 2010 Short Papers Due
October 1, 2010 Invitations to Present at the Workshop
November, 2010 Workshop

Organizing Committee:
Ozlem Uzuner, co-chair, SUNY at Albany and Middle East Technical 
University Northern Cyprus Campus
Scott L DuVall, co-chair, VA Salt Lake City Health Care System
Imre Solti, University of Washington
Leonard D'Avolio, VA Boston Healthcare System, Center for Surgery and 
Public Health, Brigham and Women's Hospital, Harvard School of Medicine
Wendy Chapman, Department of Biomedical Informatics, University of Pittsburgh
Shuying Shen, VA Salt Lake City Health Care System
Norris Harber Heintzelman, Lockheed Martin, IS&GS
Brett R South, VA Salt Lake City Health Care System, University of 
Utah, Department of Internal Medicine
Jennifer Hornung Garvin, VA Salt Lake City Health Care System and the 
University of Utah School of Medicine
Charlene Weir, VA Salt Lake City Health Care System, GRECC

Please see the FAQs and announcements for more information. Questions 
on the challenge can be addressed to Ozlem Uzuner, i2b2nlp at albany dot edu.