Call for Participation: Multilingual Word Sense Disambiguation (SemEval 2013 - Task 12)


Call For Participation

Multilingual Word Sense Disambiguation
SemEval 2013 - Task #12

The aim of this task is to evaluate Word Sense Disambiguation systems in an
all-words multilingual setting.


Task 12 provides a traditional setup for evaluating Word Sense
Disambiguation (WSD) systems in an all-words, multilingual setting by
marking occurrences of potentially polysemous words in five different
languages (English, French, German, Italian, Spanish) with sense labels
provided by a multilingual sense inventory.  To enable multilinguality we
make use of the BabelNet sense inventory [1], a wide-coverage semantic
network built by merging WordNet with Wikipedia to provide an “encyclopedic
dictionary.”  BabelNet concepts are lexicalized in many languages using
Wikipedia’s inter-language links and the output of a state-of-the-art
machine translation system.   Task 12 will use a validated version of
BabelNet 1.1 ( in which the Wikipedia-WordNet mappings
of all senses of lemmas in the test data have been manually verified.


Participants are free to work on the full BabelNet sense inventory or to
work on either of its inventory subsets, i.e. WordNet 3.0 or Wikipedia page
titles. They are also free to participate using a single language of their
choice or all five languages.


Following the traditional WSD “all-words” experimental setting [2], systems
will be expected to link all occurrences of noun phrases within arbitrary
texts in different languages to the most suitable senses in the sense
inventory of their choice. For instance, given the sentence:

   1. The dramatic force of Miller's play derives in part from
   expressionistic techniques he used to portray Loman's psychological anguish
   and guilt-ridden fantasy life.

a disambiguation system should link “Miller” to any of (1) the BabelNet
synset for Arthur
(2) the Wikipedia sense corresponding to the page, or (3) Miller#n#3 (i.e. the
third WordNet sense for Miller), depending on the participant’s choice of
sense inventory.  Note that the BabelNet synset will contain where
applicable both the Wikipedia page and the WordNet synset in its

Participants will be evaluated in groups based on their choice of sense
inventory and target language. All the information about the submitted
systems (such as training data, resources, etc. used by the system) will be
reported in the task paper.


No training data will be provided as a part of this task; however,
participants are allowed to use any freely available training data for
building their system.

For annotating the test set, by mid-February we will provide a gold
standard version of BabelNet 1.1 where all synsets used in the test data
have been manually verified for correctness.


February 15, 2013 - Registration Deadline
March 1, 2013 onwards - Start of evaluation period
March 15, 2013 - End of evaluation period
April 9, 2013 - Paper submission deadline [TBC]
April 23, 2013 - Reviews Due [TBC]
May 4, 2013 - Camera ready Due [TBC]


The Semeval-2013 Task #12 website, for signup and details, is:

If interested in the task please join our mailing list for updates:

Roberto Navigli (, Sapienza University of Rome,
David Jurgens (, Sapienza University of Rome, Italy

1. Roberto Navigli & Simone Paolo Ponzetto. BabelNet: The automatic
construction, evaluation and application of a wide-coverage multilingual
semantic network. Artificial Intelligence, 193, 2012, pp. 217-250.
2. Roberto Navigli. Word Sense Disambiguation: A survey. ACM Computing
Survey, 41(2), ACM Press, 2009, pp. 1-69.*

Received on Tuesday, 5 February 2013 18:54:32 UTC