Conventional collaborative filtering(CF) recommendation applies the user-based centralized architecture. This architecture
has some problems of sparsity and scalability, in addition to not fit the current popular P2P architecture. Therefore, this
paper proposes a distributed model to implement the CF algorithm by maintaining the user’s record information distributedly
in each nodes throughout the network, constructing a DHT, applying the Chord algorithm to realize locating of the record and
designing the corresponding communication policy to obtain data needed.
Keywords collaborative filtering - probabilistic relevance model - distributed - Chord