In contrast with centralized recommender systems, social recommendation algorithm is applied to the item rating data on social networks. Meaningful recommendation can be uncovered by the topology of social network as well as the similarity between users. More importantly, this information becomes propagated into the users in the estimated same groups. As the goal of this paper, we propose a nov...

Todays WWW consists of more than just information. The WWW provides a large number of services, which often require identification of it’s users. This has lead to the fact that today users have to maintain a large number of different credentials for different websites distributed or shared identification systems are not widely deployed. Furthermore, current authorisation systems require strict ...

Healthcare information systems needs to share and to reuse the patient’s information not only in a department where the information is being formed, but also between the departments of an organization and also among the different organizations. The requirements of health services like providing efficient services and ensuring continuity causes privatization of information. As patient health inf...

Information sharing forms a large component of the Social Web as web users become citizens within the web sphere. Within ‘walled garden’ services they interact socially with their peers through blog posts, image sharing and writing on one another’s ‘walls’. Porting this data for reuse opens up the social graph associated with the user. In this paper we present work to export Semantic informatio...

The Semantic Web (SW) presents new challenges to statistical relational learning. One of the main features of SW data is that it is notoriously incomplete. Consider friend-of-a-friend (FOAF) data. The purpose of the FOAF project is to create a web of machinereadable pages describing people, their relationships, and people’s activities and interests, using SW technology. Obviously people vary in...

This paper presents the RDFHomepage project, a framework for using a person’s structured data sources to auto-generate an HTML homepage. RDFHomepage uses RDF files as input, and currently supports several well-known RDF schemas, such as FOAF. In addition to these we have RDF converters for other structured file-formats, like Bibtex. RDFHomepage produces valid HTML 4.01 Transitional pages, and m...

In this paper, we discuss the draft OWL 2 RL profile from the perspective of applying the constituent rules over Web data. In particular, borrowing from previous work, we discuss (i) optimisations based on a separation of terminological data from assertional data and (ii) the application of authoritative analysis to constrain third party interference with popular ontology terms. We also provide...

We present a semantic context management framework named ContextTorrent, which can make various types of context information be semantically searchable and sharable among local and remote context-aware applications. We implement this framework on the Google Android platform with its elegant application support. An open source RDF parser has been extended to effectively get RDF triples from file...

In this paper we describe a two-step approach for the publication of data about displaced people in Colombia, whose lack of homogeneity represents a major barrier for the application of adequate policies. This data is available in heterogeneous data sources, mainly relational, and is not connected to social networking sites. Our approach consists in a first step where ontologies are automatical...

This work describes our efforts towards making the website of our research group, namely MORElab, comply with the principles of Linked Data. As a first attempt, we have made the information related to our research publications available in RDF. Such data is published according to the Bibliographic and Dublin Core Ontologies and interlinked with instance data of the FOAF and DBLP vocabularies. O...