WWW 2012 Metadata Challenge

The winner of the metadata challenge is ConfHopper. We announced the results together with the best paper awards and the best student award on Thursday 19th April 2012. The winner of the challenge was determined partly base on public votes, partly on the extra desirable features they provide. A jury of experts participated to the final decision. See the slides announcing the decision.

Sponsored by Antidot logo

The submitted applications are the following:

The following applications were also submitted as late submissions:

Call for applications

The call for applications is now closed. If you are interested in making a useful application using metadata of future conferences, you can get in touch with the metadata chair of the upcoming ESWC 2012 conference, Olaf Hartig.

The metadata committee is organising this year a challenge for developers in order to show case the utility of the conference metadata. Since 2007, the WWW conference is providing its metadata about papers, authors, programme, location, committees in RDF. The datasets are made available at the Semantic Web Dog Food web portal, which offers various access means to Linked Data applications. While the mere publication of such data is useful to contribute to the Web of Data, this year we will provide more diverse ways of browsing the data by encouraging data hackers to develop applications that leverage the conference metadata. To spice this up a little bit, we challenge developers to make the most interesting, most original tool and we will reward the best one with a prize. The submitted software must be made available as Web applications that the attendees can try on their laptop or their mobile phones.

Challenge criteria

The selection of the metadata tools is made according to minimal criteria. All applications that match these criteria will be made available for the attendees to try, no matter how many and how good they are. However, only few of them will be selected as "“featured application”s" before the conference, and one will be selected as best metadata application and the developers will be rewarded with a prize.

In addition to the minimal requirements, we provide additional desirable features that submissions should exhibit.

Minimal requirements

Additional Desirable Features

In addition to the above minimal requirements, we note other desirable features that will be used as criteria to evaluate submissions.

Important dates

The deadline has passed but you can submit extra applications that will be listed here but that will not participate in the challenge.

Submission deadline:
February 25th March 5th, 2012
Selection of featured applications:
15th April, 2012
WWW Conference (attendees can test the applications):
April 16th-20th, 2012

How to Participate

In order to participate, applicants must send by email the following information before 25th February, 2012 to antoine.zimmermann@emse.fr.

The following information must be provided:

Moreover, applicants may declare their intent to participate by sending an email to the organisers. This way, they will be notified when the dataset is available and they will get a link to a dump of the dataset.


The datasets will be made available after the notification of acceptance. Before they are released, developers can start testing their application on previous conference datasets, such as WWW 2011 or ISWC 2011, available at The Semantic Web Dog Food server. The datasets for WWW 2012 will be available there as well using the same format and vocabularies. Participants who sent an email prior to their submission will be notified when the dataset is available.

Winners and prizes

The best application will be chosen by the committee during the conference based on the experience of using the applications in the course of the event. The winners will be rewarded a monetary prize (to be decided). A short listing of "featured applications" will be defined before the conference.


Antoine Zimmerrmann, Université de Lyon, France, antoine.zimmermann@emse.fr

Daniel Schwabe, PUC-Rio, Brazil, dschwabeatinfdotpuc-riodotbr


metadata.html: last modified 2012/04/24 18:26:42 by Antoine Zimmermann.