[public-lod2] QALD 3 challenge

Axel Ngonga ngonga at informatik.uni-leipzig.de
Wed Feb 6 22:18:01 UTC 2013

Sorry for multiple postings.

3rd Open Challenge on Multilingual Question Answering over Linked Data 


               collocated with CLEF 2013

QALD-3 is the third in a series of evaluation campaigns on question 
answering over linked data,
this time with a strong emphasis on multilinguality. In the context of a 
half-day lab at
CLEF 2013, it offers two open challenges:

Task 1: Multilingual question answering
Task 2: Ontology lexicalization

All relevant information about training and test phase as well as the 
lab can be found on the


* Motivation & Scope *

While more and more semantic data is published on the Web, the question 
of how typical Web users can
access this body of knowledge becomes of crucial importance. Over the 
past years, there is a growing
amount of research on interaction paradigms that allow end users to 
profit from the expressive power
of Semantic Web standards while at the same time hiding their complexity 
behind an intuitive and
easy-to-use interface. Especially natural language interfaces have 
received wide attention, as they
allow users to express arbitrarily complex information needs in an 
intuitive fashion and, at least
in principle, in their own language. The key challenge lies in 
translating the users' information
needs into a form such that they can be evaluated using standard 
Semantic Web query processing and
inferencing techniques. To this end, systems have to deal with a 
heterogeneous, distributed and very
large set of highly interconnected data. The availability of such an 
amount of open and structured
data has no precedents in computer science and approaches that can deal 
with the specific character
of linked data are urgently needed.

In addition, multilinguality has become an issue of major interest for 
the Semantic Web community,
as both the number of actors creating and publishing data all in 
languages other than English,
as well as the amount of users that access this data and speak native 
languages other than English
is growing substantially. In order to achieve the goal that users from 
all countries have access to
the same information, there is an impending need for systems that can 
help in overcoming language
barriers by facilitating multilingual access to semantic data originally 
produced for a different
culture and language.

* Schedule *

Release of training dataset and instructions: February 1, 2013
Release of test dataset:                      May 1, 2013
Submission deadline:                          May 31, 2013
Release of evaluation results:                June 17, 2013
Deadline for workshop notes submission:       August 1, 2013
Workshop:                                     September, 2013

We cordially invite everyone working on question answering over linked 
data and/or ontology
lexicalization to participate and look forward to an exciting and 
insightful challenge!

With best regards,

Vanessa Lopez,
Philipp Cimiano,
Christina Unger,
Elena Cabrio,
Axel Ngonga,
Sebastian Walter

Axel Ngonga, Dr. rer. nat
Augustusplatz 10
Room P616
04109 Leipzig

Tel: +49 (0)341 9732341
Fax: +49 (0)341 9732239

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