How to model semantic peer-to-peer overlays?

Simulation studies are frequently used to evaluate new semantic peer-to-peer searching techniques. However, one major problem is the lack of a common evaluation standard and of common data sets. Therefore, comparing results and routing approaches from different research groups often is not possible. Based on our recent experiments and simulations we present a common model, evaluation metrics, and data sets for semantic peer-to-peer networks. Ideally, we like to encourage the community to work towards a common evaluation standard.