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In this work we propose a novel probabilistic flooding strategy for unstructured p2p networks. Our strategy takes into account the popularity of resources and the hop distance from the node that initiated the query. The latter is used to estimate the number of nodes reached by the query message. Based on the above parameters we adjust the forwarding probability at the time a node receives the query...
In this paper, we propose an efficient multiple hashes method (called KAD-N) to balance peer loads in the KAD (Kademlia) network. Note that N is the maximum hash times, determining by a cost-effectiveness factor. This method hashes the keyword of an object r times to produce a key for publishing objects, where r is a random number and 1 ?? r ?? N. Simulation results show that the distribution of indexes...
DHT systems are structured overlay networks capable of using P2P resources as a scalable platform for very large data storage applications. However, their efficiency expects a level of uniformity in the association of data to index keys that is often not present in inverted indexes. Index data tends to follow non-uniform distributions, often power law distributions, creating intense local storage...
Collaborative design is a new technique for mechanical design. Multi-agent system (MAS) can cooperate with others to solve problems by network of software agents. Collaborative design system includes design agent, manage agent, conflict resolution agent and so on. A method based on MAS is present to solve the resource finding among agents. Firstly, the relationship between multi-agent systems and...
Information retrieval has been the important problem of research in unstructured P2P systems. In order to improve the efficiency of the data retrieval, this paper proposed an algorithm for intelligent search based on skyline query technology. Combining the similarity of messages and the hit rate of nodes, a best set of neighbour nodes which was sent messages to was obtained by skyline query technology...
Apart from files, P2P Networks can be used for sharing non-replicable and reusable (e.g. computational) resources. This paper explains why existing discovery mechanisms have low performance searching for those resources in random power-law degree distributions. While high-degree nodes become more popular, their resources are consumed, resulting into a power-law network topology with no more useful...
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