Workshop on Social and Collaborative

Construction of Structured Knowledge

at 16th International World Wide Web Conference (WWW2007)

Banff, Canada, May 8, 2007


Workshop Home Accepted Papers Accepted Demos Challenge Workshop


Workshop Proceedings are published as a CEUR volume

Workshop results are discussed in a technical report

Participate in the CKC challenge!

We invite everyone -- those who plan to attend the workshop and those who don't -- to participate in the CKC challenge to assess the state of the art for the tools for collaborative knowledge construction. The challenge runs from April 16 to April 30.

Invited talk

Jamie Taylor of Metaweb will give an invited talk at the workshop.

Workshop Description

Have you ever tried developing a schema or ontology, or creating other structured knowledge? Have you tried doing this task collaboratively with your colleagues? How about with many of your colleagues as well as people you've never met? Or anyone else in the world? Have you found the tools that support these tasks? Do you have a list of requirements for such tools or has your group developed tools to support collaborative acquisition of structured knowledge in general and ontologies and schemas in particular?

We are soliciting contributions to the workshop on Social and Collaborative Construction of Structured Knowledge. The great success of Web 2.0 is mainly fuelled by an infrastructure that allows web users to easily create, share, tag, and connect content and knowledge. Although the general topic of integrating Web 2.0 with the Semantic Web has been and will be the focus of high profile conference panels, we are still far from understanding how the two topics relate to each other. In this workshop, we would like to explore how the power of creating web content in a social environment can be used to acquire, formalize and structure knowledge. The workshop will address the topic of web-based collaborative construction of structured knowledge in general, and ontology development in particular. So far, most of the tools for ontology development and knowledge acquisition are stand-alone tools, or tools designed to support work of small well-coordinated teams. This workshop will investigate how best to use the “wisdom of the crowd” to reduce time and cost of constructing and maintaining knowledge structures in any language and level of complexity. We will discuss tools that support various steps of the life cycle in the “open” collaborative development of ontologies, from collective “brainstorming” to evaluation, maintenance and extension of existing ontologies.

We solicit three types of contributions:

  1. Research papers analyzing the process of collaborative knowledge acquisition, requirements for tool support, and case studies of collaborative ontology-development projects. The topics relevant to this discussion include issues related to collaborative construction of structured knowledge and ontologies:
    • collaborative creation and editing of structured knowledge
    • requirements for collaborative tools
    • user-specific views of ontologies
    • extracting structure and ontologies from tags and annotations
    • evaluation of collaborative tools
    • collaborative evaluation of ontologies
    • user interfaces for collaborative tools for creating structured knowledge
    • trust in collaborative construction of knowledge
    • case studies of collaborative ontology-development project.
  2. Demos and working prototypes of systems that support social collaborative construction of structured knowledge. The systems should fall under the general description above. Furthermore, participants in the demo session must commit to supporting the evaluation (see the next item). This support will include working with the workshop organizers to develop a set of tasks for the evaluation, instrumenting their tools to log basic usage and contribution information. Please contact workshop co-chairs for more information. For practical reasons, not all demos will be selected to take part in the evaluation.
  3. Evaluation of system demos submitted to the workshop. We expect that all workshop participants (and, in particular paper and demo authors) will participate in a formative evaluation of the demos submitted to the workshop. The developers of the demo systems will make their systems available to the workshop participants. The workshop organizers, together with the demo developers, will create a list of tasks to use for the demo evaluation and other details. Depending on the number and type of demo submissions, we expect that the list of tasks will apply to all or some of the demos. Note that for practical reasons, and based on demo suitability for the selected evaluation tasks, some demos may not be chosen to take part in the evaluation. The evaluation will run for 2 or 3 weeks before the workshop and a good part of the workshop will be devoted to the discussion of the evaluation, and a prize will be handed out to the most informative review.

Accepted papers and demo descriptions will appear in the workshop proceedings and will be included in the WWW2007 conference CD.


Paper submission: 12 February 2007 (extended)
Notification of paper acceptance: 9 March 2007
Camera-ready papers: 26 March 2007

Demo submission: 19 February 2007 (extended)
Notification of demo acceptance: 9 March 2007
Camera-ready demo description: 26 March 2007

Evaluation: 1-30 April 2007
Workshop: 8 May 2007


Organizing committee

Program Committee

Anupriya Ankolekar, University of Karlsruhe, Germany
Lora Aroyo, Free University Amsterdam., Netherlands
Sören Auer, University of Leipzig, Germany
Melanie Aurnhammer, Sony Computer Science Laboratory, France
Abraham Bernstein, University of Zurich, Switzerland
Oscar Corcho, University of Manchester, UK,
Sherri de Coronado, National Cancer Institute, USA
Duane Degler, IPGems, USA
John Domingue, Open University, UK
Gilberto Fragoso, National Cancer Institute, USA
Aldo Gangemi, Institute of Cognitive Sciences and Technology (CNR), Italy
Carole Goble, University of Manchester, UK
Jennifer Golbeck, University of Maryland, UK
Asuncion Gomez-Perez, Universidad Politécnica de Madrid, Spain
Tom Heath, Open University, UK
Andreas Hotho, University of Kassel, Germany
Yannis Kalfoglou, University of Southampton, UK
Markus Krötzsch, University of Karlsruhe, Germany
Ravi Kumar, Yahoo! Research, USA
Stéphane Laurière, Mandriva, France
Jayant Madhavan, Google, USA
Yutaka Matsuo, National Institute of Advanced Industrial Science and Technology, Japan
Riichiro Mizoguchi, Osaka University, Japan
Yishay Mor, London Knowledge Lab, UK
Enrico Motta, Open University, UK
Jasmine Novak, Yahoo! Research, USA
Kieron O'Hara, University of Southampton, UK
Elena Paslaru, FU Berlin, Germany
Paulo Pinheiro da Silva, University of Texas at El Paso, USA
H Sofia Pinto, University of Lisbon, Portugal
Valentina Presutti, Institute of Cognitive Sciences and Technology (CNR), Italy
Sebastian Schaffert, Salzburg Research, Austria
Christoph Schmitz, University of Kassel, Germany
Frank Smadja, Raw Sugar, USA
Steffen Staab, University of Koblenz-Landau, Germany
Aaron Swartz, Reddit, USA
Martin Szomszor, University of Southampton, UK
Hideaki Takeda, Tokyo Research Institute, Japan
Tania Tudorache, Stanford University, USA
Mark Wilkinson, University of British Columbia, Canada


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