The 4th international workshop Social Data on the Web (SDoW2011),
co-located with the 10th International Semantic Web Conference
(ISWC2011), aims to bring together researchers, developers and
practitioners involved in semantically-enhancing social media
websites, as well as academics researching more formal aspect
of these interactions between the Semantic Web and Social Web.

Important dates
---------------
* Submission deadline: Aug 15, 2011
* Notification of acceptance: Sep 05, 2011
* Camera-ready paper submission: Sep 15, 2011
* Camera-ready proceedings: Oct 07, 2011
* Workshop: Oct 23/24, 2011

Description
-----------
It is now widely agreed in the community that the Semantic Web
and the Social Web can benefit from each other. One the one hand,
the speed at which data is being created on the Social Web is
growing at exponential rate. Recent statistics showed that about
100 million Tweets are created per day and that Facebook has now
500 million users. Yet, some issues still have to be tackled, such
as how to efficiently make sense of all this data, how to ensure
trust and privacy on the Social Web, how to interlink data from
different systems, whether it is on the Web or in the enterprise,
or more recently, how to link Social Network and sensor networks
to enable Semantic Citizen Sensing.

Following the successful SDoW workshops at ISWC 2008, 2009 and
2010, this workshop will tackle these various topics and aims
at bringing together researchers and practitioners, as in the
3 previous editions. We aim to bring together Semantic Web
experts and Web 2.0 practitioners and users to discuss the
application of semantic technologies to data from the Social
Web. It is motivated by recent active developments in collaborative
and social software and their Semantic Web counterparts, notably in
the industry, such as FaceBook Open Graph Protocol.

Topics of interest
------------------
Topics of interest include, but are not limited to:

* Applications and tools using Social Semantic Web technologies
* Creating RDF-based knowledge using social media services
* Data Portability and Social Network Portability
* Emerging semantic platforms for the Social Web
* Enriching Social Web with semantic data - RDFa, microformats
and other approaches
* Linked Data on the Social Web - providing linked data from social
media sites
* Mining and analysis of Social Data
* Ontologies for the Social Web - developing, using and extending
lightweight ontologies for social media sites
* Querying and mining social semantic data
* Policies, authentication, security, and trust within collaborative
scenarios
* Citizen Sensing and the Semantic Web
* Social Networks and Sensor Networks
* Legal aspects of the Social Semantic Web
* Large scale data mining and reasoning over large social media
datasets
* Domain-specific social network (e-business, HCLS, etc.) and
Semantic Web
* Social Semantic Web and disaster/emergency management

Submissions
-----------
The following types of contributions are welcomed:

* Full technical papers, up to 12 pages.
* Short technical papers and position papers, up to 6 pages.
* Posters and Demos, 2-3 pages with a description of the
application, ideally accompanied with a link to an online demo.


Workshop Chairs
---------------
* Alexandre Passant, DERI, NUI Galway, Ireland
* Sergio Fernández, Fundación CTIC, Spain
* John Breslin, DERI, NUI Galway, Ireland
* Uldis Bojārs, University of Latvia, Latvia

Program Committee
-----------------
* Alessandra Toninelli, Research & Innovation Division of the Engineering Group, Italy
* Axel Ngonga, Universität Leipzig, Germany
* Chris Bizer, FUB, Germany
* Dan Brickley, FOAF project & Vrije Universiteit Amsterdam, The Netherlands
* Daniel Gayo-Avello, University of Oviedo, Spain
* Daniel Schwabe, PUC Rio, Brasil
* Diego Berrueta, Fundación CTIC, Spain
* Emanuele Della Valle, Politecnico di Milano, Italy
* Fabien Gandon, INRIA, France
* Gunnar Aastrand Grimnes, DFKI Knowledge Management Lab, Germany
* Harry Halpin, University of Edinburgh / W3C, UK
* Henry Story, Apache Software Foundation, France
* Irene Celino, CEFRIEL, Italy
* Jose E. Labra, University of Oviedo, Spain
* Libby Miller, BBC, UK
* Matthew Rowe, University of Sheffield, UK
* Michael Hausenblas, DERI, NUI Galway Ireland
* Mischa Tuffield, Garlik, UK
* Olaf Hartig, Humboldt-Universität zu Berlin, Germany
* Oscar Corcho, UPM, Spain
* Pablo López, Treelogic, Spain
* Pablo Mendes, Kno.e.sis, Wright State University, USA
* Richard Cyganiak, DERI, NUI Galway, Ireland
* Sebastian Tramp, Universität Leipzig, Germany
* Sheila Kinsella, DERI, NUI Galway
* Sofia Angeletou, KMi, The Open University, UK
* Steve Harris, Garlik, UK
* Yves Raimond, BBC, UK