Standing on the Shoulders of Peers: Caching in Peer-to-Peer Information Retrieval

State-of-the-art P2P IR systems suffer from their lack of response time guarantees, especially with scale. To address this issue, a number of techniques for caching of multi-term inverted list intersections and query results have been proposed recently. Although these enable speedy query evaluations with low network overhead, they fail to consider the potential impact of caching on result quality improvements.