[Corpora-List] Call for Participation of the CoNLL 2013 Shared Task on Grammatical Error Correction

Christian Hadiwinoto chrhad at comp.nus.edu.sg
Wed Feb 6 17:48:30 CET 2013

Shared Task: Grammatical Error Correction

CoNLL 2013 will continue the CoNLL tradition of having a high profile

shared task in natural language processing. This year's shared task

will be grammatical error correction. A participating system in this

shared task is given short English texts written by non-native

speakers of English. The system detects the grammatical errors present

in the input texts, and returns the corrected texts.

This task has gained popularity recently with the organization of the

HOO (Helping Our Own) shared tasks in 2011 and 2012. In the most

recent HOO shared task in 2012, on error detection and correction of

determiners and prepositions, 14 teams from around the world

participated and 85 systems were submitted to the shared task.

The grammatical error correction task is impactful since it is

estimated that hundreds of millions of people in the world are

learning English and they benefit directly from an automated grammar

checker. However, for many error types, current grammatical error

correction methods do not achieve a high performance and thus more

research is needed.

Instead of focusing on only determiner and preposition errors as in

HOO 2012, the CoNLL 2013 shared task will include a more comprehensive

list of error types, including determiner, preposition, noun number,

verb form, agreement, spelling, and punctuation errors. Extending into

more error types introduces the possibility of correcting multiple

interacting errors. Examples of such interacting errors include

determiner and noun number ('that cars' -> 'that car' or 'those cars')

and preposition and verb form ('an interest to study' -> 'an interest

in studying').

Participating teams will be provided with common training data in

which grammatical errors have been annotated. Blind test data will be

used to evaluate the outputs of the participating teams using a common

scoring software and evaluation metric.

The shared task home page is accessible at:


Registration (NEW)

Registration for the shared task has begun. Please email the following

information to conll13st at gmail.com: name, email address, and

affiliation of the members of a participating team, with one team

member designated as the contact person. Upon registration, each

participating team will receive the training data and scorer and join

a discussion group for the shared task. A signed license agreement is

needed for receipt of the training data. A team can register at

anytime before the registration deadline, but early registration is

highly encouraged, since details of the shared task will be announced

on the discussion group.

Important Dates

December 17, 2012: announcement of shared task

January 17, 2013: set up of shared task website

February 5, 2013: registration begins and release of training set and scorer

March 5, 2013: registration deadline

April 28, 2013: test set available

May 1, 2013: systems' outputs collected

May 8, 2013: system results due to participants

May 15, 2013: shared task system papers due

May 24, 2013: reviews due

May 27, 2013: notification of acceptance

June 3, 2013: camera ready version of shared task system papers due

August 8-9, 2013: CoNLL 2013 conference

Shared Task Organizers

Hwee Tou Ng (Chair), National University of Singapore

Joel Tetreault, Nuance Communications

Siew Mei Wu, National University of Singapore

Yuanbin Wu, National University of Singapore

Christian Hadiwinoto, National University of Singapore


Questions about the CoNLL 2013 shared task can be sent to conll13st at gmail.com.

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