Peer Selection in Peer-to-Peer Networks with Semantic Topologies

Peer-to-Peer systems have proven to be an effective way of sharing data. Modern protocols are able to efficiently route a message to a given peer. However, determining the destination peer in the first place is not always trivial. Especially in a distributed knowledge management setting [8], knowing the right peers for answering a given query can be difficult. We propose a model in which peers advertise their expertise in the Peer-to-Peer network. The knowledge about the expertise of other peers forms a semantic topology. Based on the semantic similarity between the subject of a query and the expertise of other peers, a peer can select appropriate peers to forward queries to, instead of broadcasting the query or sending it to a random set of peers. For our similarity measure we assume that the peers share the same ontology. We evaluate the model in a bibliographic scenario, where peers share bibliographic descriptions of publications among each other. In simulation experiments we s...

• Type: Conference
• Year: 2004
• Where: ICSNW
• Authors: Peter Haase, Ronny Siebes, Frank van Harmelen
• Keywords: Appropriate Peers, Database, ICSNW 2004, Information Storage, Right Peers