Collaborative ontology building requires innovative navigational instruments that improve content exploration and the creation of shared meaning. Building upon an existing architecture for automated ontology learning from unstructured textual resources developed by the authors, this paper presents a Web-based user interaction framework encompassing three major components: (i) real-time visualiz...

This paper discusses the relationship between ontology, seen as the doctrine concerned with the nature of reality, and the management of technology. It introduces two ontological positions: realism and constructivism. Realism is the position that holds that reality is objectively given and independent of the observer. Constructivism stands for the belief that reality is constructed by the obser...

estimating similarity is expressed in many domains and sciences. for instance, data mining, web mining, clustering, search engines, ontology mapping and social networks require the definition and deployment of similarity. user similarity in social networks is one of the main problems and has many applications in this area. in this paper, a new method is introduced for combining structural and n...

information systems (is) and the process of distinguishing information systems ontology have been the center of challenge during the 50 years of is development. the importance of this challenge is emergent in direct link between knowledge development process in is and the is ontology. in other words, theorizing and efforts to falsify theories, which have been developed, is influenced by the way...

Social computing websites provide a framework for users to submit (and discuss) content, while often providing a user created categorization system, dubbed folksonomies. Additionally users may have the ability to specify friends (and foes) within the social network, populated by registered users of the social website. Integrating folksonomies with ontologies provides the ability to capture the ...

This paper presents a novel approach to automatic semantic social network construction based on semantic user preference clustering. Considering a number of users, each of them with an associated ontology-based profile, we propose a strategy that clusters the concepts of the reference ontology according to user preferences of these concepts, and then determines which clusters are more appropria...

The Friend of a Friend (FOAF) ontology is a vocabulary for mapping social networks. In this paper we propose an extension to FOAF in order to allow it to model learners and their social networks. We analyse FOAF alongside different learner modeling standards and specifications, and based on this analysis we introduce a taxonomy of the different features found in those models. We then compare th...

Web 2.0 is turning current Web into social platform for knowing people and sharing information. The Web is strongly socially linked than ever. This paper takes major social tagging systems as examples, namely delicious, flickr and youtube, to analyze the social phenomena in the Social Web in order to identify the way of mediating and linking social data. A simple Upper Tag Ontology (UTO) is pro...

This paper presents a novel approach to automatic semantic social network construction based on semantic user preference clustering. Considering a number of users, each of them with an associated ontology-based profile, we propose a strategy that clusters the concepts of the reference ontology according to user preferences of these concepts, and then determines which clusters are more appropria...