A locality-aware overlay network for high performance computing, GTapestry, is proposed in this paper. GTapestry assembles physically neighboring nodes in the Internet into self-organized groups. The routing mechanism...
详细信息
A fundamental problem in peer-to-peer networks is how to locate appropriate peers efficiently to answer a specific query request. This paper proposes a model in which semantically similar peers form a semantic overlay...
详细信息
ISBN:
(纸本)1595931082
A fundamental problem in peer-to-peer networks is how to locate appropriate peers efficiently to answer a specific query request. This paper proposes a model in which semantically similar peers form a semantic overlay network and a query can be routed or forwarded to appropriate peers instead of broadcasting or random selection. We apply Latent Semantic Indexing (LSI) in information retrieval to reveal semantic subspaces of feature spaces from documents stored on peers. After producing semantic vectors through LSI, we train a support vector machine (SVM) to classify the peers into different categories based on the extracted vectors. Peers with close categories are defined as semantic similarity and form a semantic overlay. Experimental results show the model is efficient and performs better than other non-semantic retrieval models with respect to accuracy. In addition, our approach improves the recall rate nearly 100% while reducing message traffic dramatically compared with Gnutella. Copyright 2006 ACM.
Text-based image search engine and content-based image retrieval (CBIR) have achieved much progress in commercial and academic community respectively. However, few attempts have been conducted to integrate the two tec...
详细信息
Access to scientific literature information is a very important, as well as time-consuming daily work for scientific researchers. Current methods of retrieval are usually limited to keyword-based searching using infor...
详细信息
gridcomputing is becoming more and more attractive for coordinating large-scale heterogeneous resource sharing and problem solving. From the viewpoint of decentralization and interoperability, we add agent layer base...
详细信息
This paper proposes a semantic overlay based on the small world phenomenon that facilitates efficient search for information retrieval in unstructured P2P systems. In the semantic overlay, each node maintains a number...
详细信息
ISBN:
(纸本)1595933239
This paper proposes a semantic overlay based on the small world phenomenon that facilitates efficient search for information retrieval in unstructured P2P systems. In the semantic overlay, each node maintains a number of short-range links which are semantically similar to each other, together with a small collection of long-range links that help increasing recall rate of information retrieval and reduce network traffic as well. Experimental results show that our model can improve performance by 150% compared to Gnutella and by up to 60% compared to the Interest-based model - a similar shortcut-based search technique.
MIGP (Medical Image grid Platform) realizes information retrieval and integration in extensive distributed medical information systems, which adapts to the essential requirement for the development of healthcare infor...
详细信息
This paper introduces a novel lightweight clock synchronization protocol (LCSP) and BUB clock synchronization algorithm based on real-time micro-kernel. Unlike other clock synchronization approaches which rely on redu...
详细信息
The design and implementation of SemreX is studied in this paper, which is a semantic Peer-to-Peer (P2P) scientific references sharing system. Compared with other systems, SemreX extracts the bibliographic information...
详细信息
This paper presents ALTER, an adaptive failure detection service, which incorporates the technique of unreliable failure detection service and the idea of R-GMA. ALTER is organized in a hierarchical structure and it c...
详细信息
ISBN:
(纸本)1595931082
This paper presents ALTER, an adaptive failure detection service, which incorporates the technique of unreliable failure detection service and the idea of R-GMA. ALTER is organized in a hierarchical structure and it can be adaptive to the system conditions and user requirements with changing the system parameters and system organizations. With mathematical evaluation, ALTER shows good scalability and flexibility, which is suitable for grid environments. Copyright 2006 ACM.
暂无评论