As social networks are becoming ubiquitous on the Web, the Semantic Web goals indicate
that it is critical to have a standard model allowing exchange, interoperability, transformation …

Exploratory search systems help users learn or investigate a topic. The richness of the linked
open data can be used to assist this task. We present a method that selects and ranks linked …

In recent years, there has been an explosion in the number of Social Web sites which allow
the creation of knowledge through simplified user contributions via blogs, wikis, and the …

A mining method for egocentric and polycentric queries in multi-dimensional networks is
proposed. The method allows fast search for objects in sufficient proximity of other object (s) …

One of the most visible trends on the Web is the emergence of “Social Web” sites which
facilitate the creation and gathering of knowledge through the simplification of user …

The general topic of the thesis is web search. It focused on how to leverage the data
semantics for exploratory search. Exploratory search refers to cognitive consuming search …

Two strong tendencies in social networks today are their growing multidimensionality and
the key role of social objects around which they crystallize. Growing heterogeneity and …

Spreading activation (also known as spread of activation) is a method for searching
associative networks, neural networks or semantic networks. The method is based on the …

Nowadays, most of the digital content is generated within techno-social systems like
Facebook or Twitter where people are connected to other people and to artefacts such as …

Techno-social systems generate data, which are rather different, than data, traditionally
studied in social network analysis and other fields. In massive social networks agents …