Social networks play important roles in the Semantic Web: knowledge management, information retrieval, ubiquitous computing, and so on. We propose a social network extraction syst...
Information retrieval systems (e.g., web search engines) are critical for overcoming information overload. A major deficiency of existing retrieval systems is that they generally...
This paper proposes a system for personalization of web portals. A speci c implementation is discussed in reference to a web portal containing a news feed service. Techniques are ...
Integration of Web search with geographic information has recently attracted much attention. There are a number of local Web search systems enabling users to find locationspecific...
In this paper we describe a model of social and collaborative search based on the use of tags. First we will introduce the issues that drove us to the definition of this model, an...