User Intent in Online Video Search

Over the recent years, user expectations of the ability of video search engines have significantly risen. Users expect video search engines to be useful as an instrument that facilitates communication, education, entertainment and problem solving and, in relation to this, to satisfy diverse information needs. A user's information need is the...

Social Web Data Analytics: Relevance, Redundancy, Diversity

In the past decade, the Social Web has evolved into both an essential channel for people to exchange information and a new type of mass media. The immense amount of data produced presents new possibilities and challenges: algorithms and technologies need to be developed to extract and infer useful information from the Social Web. One of the main...

Towards a Social Web based solution to bootstrap new domains in cross-domain recommendations

Most recommender systems recommend items from a single domain. However, usually users’ preferences span across multiple domains. Cross-domain recommender systems can successfully recommend items in multiple domains when there is knowledge about the user’s preferences for items in at least one of the domains and when there is knowledge about...

User Modeling and Personalization in the Microblogging Sphere

Microblogging has become a popular mechanism for people to publish, share, and propagate information on the Web. The massive amount of digital traces that people have left in the microblogging sphere, creates new possibilities and poses challenges for user modeling and personalization. How can microblogging activities be exploited to infer...

Walkability as a Performance Indicator for Urban Spaces Strategies and tools for the social construction of experiences

s paper frames walkability as a performance indicator for urban spaces and critically addresses some of the existing evaluation methods. It introduces alternative strategies and tools for enabling the collective evaluation of walkability and discusses how experiences of the citizens can possibly lead to a social construct of walkability. This...

Restructuring the Social Web

The term Social Web is often used to describe a wide range of websites. So much so, that the term has become meaningless to many. This research shows what makes a website social and which functionalities these websites can be expected to offer to users. This is achieved by formulating a definition of the Social Web, a categorization of the...