Efficient content locating in peer-to-peer systems

A group-based semantic search method - GBSS is introduced to improve the efficiency and scalability of search in P2P systems. GBSS introduces a hybrid architecture in which the storage and search of raw data is based on DHT network, but the storage and search of meta-data are based on unstructured P2P network. With regard to search algorithm, GBSS introduces a new file grouping method requiring no users´ descriptions and constructs friend group relations between nodes based on interest similarity between file groups. The forwarding of users´ requests makes use of friend group relations. Simulation tests show that compared with traditional flooding algorithms, GBSS is both efficient and scalable