(2002-04-10) c

Raph Levien of Advogato on "Attack Resistant Trust Metric Meta Data". The core of any trust metric is peer certifications. In a community website context, these are assertions by users that other users are c00l d00ds. In the graph model, each user is a node, and a peer certification by A that B is c00l is an edge from A to B. In Advogato, these peer certifications are the sole input to the trust metric... There is a very large space of trust metrics you could compute. Here, I'll narrow it down to just one. This one is appropriate for implementing on a community Web server. It's also eigenvector-based, like Page Rank. The rest of the space is worth exploring, but probably would take more foo.