Here’s a reason why Microsoft invested over $200 million in Facebook. It’s all about the data Facebook has compiled on its user base and the time this user base spends on Facebook. What’s the “veracity index” for this data? One assumes it’s higher than other data sources, since users’ incentives to enter data honestly is […]

The link-prediction problem for social networks
Link prediction and link detection in sequences of large social networks using temporal and local metrics.
Multiplicative latent factor models for description and prediction of social networks
Modeling Trust and Influence on Blogosphere using Link Polarity
Detecting invisible relevant persons in a homogeneous social network (.ppt here)