Traditional broadcast protocols fail to scale to large settings. Several recent attempts have proven efficient to ensure reliable information dissemination in groups composed of a large number of participants. This paper proposes a reliable multicast protocol that integrates two complementary approaches to deal with the large-scale dimension in group communication protocols: gossip-based probab...

In this paper we address the problem of introducing semantics into Deep Web. Our main contribution is an annotation-based model for semantic, unified access to heterogeneous Deep Web sources. We discuss the problem of source navigation and semantics modeling, introduce personalized views on the ontology and demonstrate their use for navigation and extraction of Deep Web data.

This paper presents a 15-item classification for MediaWiki Talk pages comments, associated with a new lightweight ontology that extends SIOC to represent these categories. We discuss how this ontology can enhance MediaWiki Talk pages, with RDFa, making content of such pages easier to parse and to understand.

The SIOC Ontology can be used to express information from the online community sites in a machine-readable form using RDF. This rich data structure allows us to easily analyse and extract social relations from these community sites. We use SIOC information to analyse the social relations between users through the content that they create. We introduce metrics for social neighbourhood and social...

Online community sites have replaced the traditional means of keeping a community informed via libraries and publishing. At present, online communities are islands that are not interlinked. We describe different types of online communities and tools that are currently used to build and support such communities. Ontologies and Semantic Web technologies offer an upgrade path to providing more com...

Social media sites, including social networking sites, have captured the attention of millions of users as well as billions of dollars in investment and acquisition. To better enable a user’s access to multiple sites, portability between social media sites is required in terms of both (1) the personal profiles and friend networks and (2) a user’s content objects expressed on each site. This req...

SWAN/SIOC is an alignment of two Web ontologies that, taken together, represent Scientific Discourse in online communities at different levels of granularity (content items and discourse elements). The goal of this alignment is to make the discourse structure and component relationships much more accessible to computation, so that information can be navigated, compared and understood in a conte...