Web Science studies the interpay between web technology and the human behaviour it induces at the micro, meso and macro level. In this extended abstract we examine Web Science research issues by taking a closer look at the area of digital heritage. We discuss engineering, communication and socio-economic aspects. 1 What is Web Science? Over the past 15 years the Web has had an increasing impact...

This poster describes a method to expose data in a objectrelational model as linked data. It uses Virtuoso’s Linked Data views on relational data to expose and query relational data. As our objectrelational model is evolving, we generate the linked data view definition from augmented ORM declarations. This project has received funding from the European Union’s Seventh Framework Programme for re...

This paper summarizes the results of the X-SOM tool in the OAEI 2007 campaign. X-SOM is an extensible ontology mapper that combines various matching algorithms by means of a feed-forward neural network. X-SOM exploits logical reasoning and local heuristics to improve the quality of mappings while guaranteeing their consistency. 1 Presentation of the system Nowadays, the spreading of data intens...

Semantic Web policies are statements that define the behavior of a system acting on the Semantic Web. It turned out that current policy frameworks lack important features in both, their representation and their reasoning facilities. They typically do not allow for dynamics such as evolution, i.e., the consistent modification of the policy while it is evaluated at the same time, and reactivity, ...

We describe a DBpedia extractor materializing the editing history of Wikipedia pages as linked data to support queries and indicators on the history. The different instances of the DBpedia platform typically extract RDF from Wikipedia using up to 16 extractors. The extraction focuses on structured content including infoboxes, categories, links, etc. As an example, the French chapter, of which w...

Resource List Management Systems (RLMS) allow the electronic publication of course reading lists. Aside from electronic access, existing systems in this area provide little utility for teachers and learners above and beyond the traditional paper based reading lists. Our vision is that resource lists could in actual fact become Open Educational Resources that can be shared, re-mixed and re-used ...

The social Web is going mobile and needs support for friendship management in a distributed manner, while privacy concerns mandate con guring the public visibility of one's friends. In this paper we leverage existing Web standards to describe a simple P2P protocol for establishing, enforcing, and revoking hidden friendship relations and report on an implementation for a mobile platform. We exam...

While the Internet was conceived as a decentralized network, the most widely used web applications today tend toward centralization. Control increasingly rests with centralized service providers who, as a consequence, have also amassed unprecedented amounts of data about the behaviors and personalities of individuals. Developers, regulators, and consumer advocates have looked to alternative dec...

With the emergence of world wide web, in particular web 2.0 the rapidly growing amount of news articles has created a problem for users in selection of news articles according to their requirements. To overcome this problem different clustering mechanism has been proposed to broadly categorize news articles. However these techniques are totally machine oriented techniques and lack users’ partic...

Even as social networks have become fashionable over the last few years, the emphasis has been on "artificial" social networks (like Orkut, where you state your links explicitly) over "natural" social networks (where social links are deducted from user actions, i.e., those underlying the blogosphere, globally or regionally). Blog readers and writers form communities, and there are several tools...