Structured P2P networks are vulnerable to the sybil attack. In this attack, a misbehaving person generates a huge number of node identifiers and possibly chooses some of them in ...
Online information services have grown too large for users to navigate without the help of automated tools such as collaborative filtering, which makes recommendations to users ba...
—Distance collaboration has long been a research area for distributed Virtual Environments (VEs). In these environments people interact with the technology and each other in a co...
In this paper, we design recommender systems for weblogs based on the link structure among them. We propose algorithms based on refined random walks and spectral methods. First, w...
Users of social networking sites often want to manage the sharing of information and content with different groups of people based on their differing relationships. However, group...