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A peer-to-peer (P2P) system consists of a number of decentralized distributed network nodes that are capable of sharing resources without centralized supervision. One of the most important functions in P2P system is locating resources. Dynamic joins and leaves of the node and heterogeneous network structure in P2P system make it a difficult problem to(More)
Grids are likely to be the mainstay of distributed computing. Efficient resource discovery mechanism is one of the fundamental requirement for Grid computing systems. In this article we present a survey of recent work on the integration of multi-agent systems and peer-to-peer based resource discovery services for Grid systems. This discovery services would(More)
In this paper, the problem of joint time-delay and frequency estimation of multiple sinusoidal signals received at two separated sensors is addressed. By formulating the estimation problem with the use of the parallel factor analysis framework, the corresponding state transition and observation matrices are updated in an iterative manner according to(More)
The Web Services infrastructure is a distributed computing environment for service-sharing. In this environment, resource discovery is required as a primitive functionality for users to be able to locate the services, the shared resources. This paper presents a peer-to-peer (P2P) indexing system for automatic discovery of services over distributed(More)
We propose a novel scheme, called Cooperative Semantic Caching Scheme (CSCS) for multi-level super-peer networks that support hierarchical P2P architecture. Peers share information according the semantic proximity between peers and between shared files to self-organise into clustered groups. In this paper we tackle the problem of exploiting the semantic(More)
Grids are likely to be the mainstay of distributed computing . Efficient Resource discovery mechanism is one of the fundamental requirement for Grid computing systems.Peer-to-peer organization of Grid resource discovery services would have several desirable features, including high scalability, high reliability, self-organization and self-healing ,we(More)
—A peer-to-peer (P2P) system consists of a number of decentralized distributed network nodes that are capable of sharing resources without centralized supervision. One of the most important functions in P2P system is locating resources. Dynamic joins and leaves of the node and heterogeneous network structure in a P2P system make it difficult to discover(More)
—In recent years, peer-to-peer (P2P) networks have soared in popularity in the form of file sharing applications. With this popularity comes security implications and vulnerabilities. In this paper we introduce a secure DHT-based routing scheme that has a high resilience against common attacks in order to prevente correct message delivery in DHT-based P2P(More)
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