Apologies for cross-posting.
CoNLL2010 Shared Task: "Learning to detect hedges and their scope in
natural language texts"
In Natural Language Processing (NLP) - in particular, in Information
Extraction (IE) - many applications aim at extracting factual
information from text. In order to distinguish facts from unreliable
or uncertain information, linguistic devices such as hedges
(indicating that authors do not or cannot back up their
opinions/statements with facts) have to be identified. Applications
should handle detected speculative parts in a different manner.
Hedge detection has received considerable interest recently in the
biomedical NLP community, including research papers addressing the
detection of hedge devices in biomedical texts, and some recent work
on detecting the in-sentence scope of hedge cues in text. Exploiting
the hedge scope annotated BioScope corpus and publicly available
Wikipedia texts, the goals of the Shared Task are 1) learning to
detect sentences containing uncertainty and 2) learning to resolve
the in-sentence scope of hedge cues.
The task is described in detail at
Time and venue
The shared task will be part of the CoNLL conference to be held in
conjunction with ACL 2010 in Uppsala, Sweden, July 15-16, 2010.
Tentative dates and deadlines
* February 1, 2010: training and development sets available;
* March 26, 2010: test set available;
* April 2, 2010: systems' outputs collected;
* April 18, 2010: deadline for paper submission;
* May 2, 2010: notification of acceptance;
* May 9: deadline for camera ready paper submission.
Shared Task contact email: conll2010st(at) inf.u-szeged.hu
Shared task website: http://www.inf.u-szeged.hu/rgai/conll2010st/