A new architecture for the Hitachi super technical server SR8000 has been developed. The performance of the SR8000 is 8 GFLOPS in each node, which is a RISCbased SMP, and 1 TFLOPS when up to 128 nodes are connected with an interconnect network. A node of the SR8000 provides a new COMPAS (CO-operative MicroProcessors in single Address Space) architecture and improved PVP (Pseudo Vector Processin...

One solution to process and analysis of massive graphs is summarization. Generating a high quality summary is the main challenge of graph summarization. In the aims of generating a summary with a better quality for a given attributed graph, both structural and attribute similarities must be considered. There are two measures named density and entropy to evaluate the quality of structural and at...

In this work, we design a P2P file sharing system called PSON to address the important issues of scalability, routing efficiency and complex query support. We propose a semantic overlay network of logical nodes, in which queries are routed on the basis of semantics. A logical node is formed by a cluster of peers that are close to each other in the physical network. Each cluster selects a powerf...

Self-stabilizing distributed systems provide a high degree of non-masking fault-tolerance. They recover from transient faults of any scale or nature without human intervention. In general, however, the time needed to recover from small-scale transient faults may not differ significantly from the time needed to recover from large-scale transient faults. Bounding the impact of small-scale faults ...

Entity resolution is the task of identifying all mentions that represent the same real-world entity within a knowledge base or across multiple knowledge bases. We address the problem of performing entity resolution on RDF graphs containing multiple types of nodes, using the links between instances of different types to improve the accuracy. For example, in a graph of products and manufacturers ...

In this paper a novel distributed adaptive dual-layer super-twisting sliding mode observer-based scheme is designed to isolate, reconstruct and mitigate the effects of disturbances class communication attacks affecting both generator nodes load in power networks. Voltage phase angles are measured at each node by means Phasor Measurement Units (PMUs). Based on information, an interconnection obs...

technique for storage area networks (SANs) in a metropolitan wavelength division multiplexing (WDM) ring scenario. Sectioning links are introduced to the ring to help deal with the hot node (SAN node on ring) scenarios created by the SANs and their mirrors. Two network architectures are studied: The first architecture accommodates conventional access nodes and a single SAN and its mirror, the l...

Without having direct access to the information that is being exchanged, traces of information flow can be obtained by looking at temporal sequences of user interactions. These sequences can be represented as causality trees whose statistics result from a complex interplay between the topology of the underlying (social) network and the time correlations among the communications. Here, we study ...