Design of a Recommendation System Based on Top-k Query in a Pure P2P Environment

At present, most peer-to-peer file sharing systems provide file-mark-based searching function. In the paper, we offer a file recommendation system based on pure peer-to-peer system, use the TOPK method to find similar interest peers in a way to realize the interest-based self-adaptive adjustment of network topology, and exploits the recommendation information between users with similar interest to achieve the high-efficiency searching of files in the network.