Abstract:

To improve the resource location efficiency and guarantee resource download quality of peer to peer (P2P) system, a new concept of interest domain trust similarity as well as its computation method is given based on Interest domain partition mechanism using node Interest bias in P2P Networks. Thereupon, a P2P network topology construction model named interest domain trust similarity sensitive P2P topology (ITAPT) is implemented. In ITAPT, by computing interest domain trust similarity of each other, the nodes with similar interest and trust value are connected as neighbors. Thus the ITAPT will improve node resource query efficiency, and provide an incentive mechanism to encourage node to offer more contribution so as to get better service. Simulations show that the ITAPT improves the efficiency and security of P2P topology effectively.

Key words: peer to peer network, topology model, interest domain, trust, interest domain trust similarity