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Using distributed apriori association rule and classical apriori mining algorithms for grid based knowledge discovery

Using distributed apriori association rule and classical apr...

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international conference on computing, Communication and networking Technologies

作者： Sumithra, R. Paul, Sujni Karunya University India Dept. of SS CA and IT CMS College Coimbatore India Department of Computer Applications KU Coimbatore India

ISBN: (纸本)9781424465910

The aim of this paper is to extract knowledge using predictive apriori and distributed grid based apriori algorithms for association rule mining. The paper presents the implementation of an association rules discovery data mining task using Grid technologies. A result of implementation with a comparison of classic apriori and distributed apriori is also discussed. distributed data mining systems provide an efficient use of multiple processors and databases to speed up the execution of data mining and enable data distribution. To evaluate the efficiency of the proposed system, performance analysis of apriori and predictive apriori algorithms on a centralized database have been given using weka tool. The main aim of grid computing is to give organizations and application developers the ability to create distributed computing environments that can utilize computing resources on demand. Therefore, it can help increase efficiencies and reduce the cost of computing networks by decreasing data processing time and optimizing resources and distributing workloads, thereby allowing users to achieve much faster results on large operations and at lower costs. In this paper distributed apriori association rule on grid based environment is mined and the knowledge obtained is interpreted. ©2010 IEEE.

关键词： Grid computing

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Improved fair scheduling mechanism in distributed WiMAX Mesh Networks

Improved fair scheduling mechanism in Distributed WiMAX Mesh...

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6th international conference on Wireless Communications, networking and Mobile computing (WICOM)

作者： Zhang, Zhengbing Yu, Liang Yangtze Univ Elect & Informat Coll Jinzhou 434023 Hubei Peoples R China

ISBN: (纸本)9781424437092

In distributed WiMAX Mesh Networks (DWMN), a joint solution with FEBA (Fair End-to-end Bandwidth Allocation) and DRR (Deficit Round Robin) can be used to achieve high end-to-end throughput fairness. Even then, the higher the number of hops a traffic flow traverses, the longer becomes the end-to-end delay of the traffic flow. This will result in serious unfairness of service quality among real-time traffic flows with different path length since they are delay-sensitive. In this paper, an improved fair scheduling mechanism based on the previous joint solution is proposed to deal with the above-mentioned problem by assigning a greater scheduling weight to the relayed traffic flows. Moreover, a new fairness index is defined to evaluate the service quality fairness of traffic flows. The proposed mechanism is compared with the previous joint solution by simulation. The results indicate that our proposed mechanism can provide better service quality fairness among real-time traffic flows without decreasing their throughput fairness. And it is also effective to improve the service quality fairness and throughput fairness of non-real-time traffic flows when the network is under a certain load.

关键词： DWMN FEBA DRR fairness index service quality throughput

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Intelligent framework for the management of distributed architectures

Intelligent framework for the management of distributed arch...

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11th ACIS international conference on Software Engineering, Artificial Intelligence, networking and Parallel/distributed computing, SNPD2010

作者： Ong, D. Khaddaj, S. Faculty of Computing Information Systems and Mathematics Kingston University London Kingston Upon Thames Surrey KT1 2EE United Kingdom

ISBN: (纸本)9780769540887

The continuous decentralisation and distribution of software, hardware, and human resources depends on a number of fundamental factors including the ability to provide desired Quality of Service (QoS) on resources assembled dynamically from enterprises, service providers and customer systems. Despite recent developments there are still many challenges in efficient information delivery and management services for distributed architectures. In this work we are particularly interested with the use of intelligent decision making mechanisms for the management of distributed architectures. Our research aims at designing and developing an intelligent decision making mechanism for the management, distribution, control and optimisation of systems resources within large distributed systems which allows dynamic system architecture configuration and provisioning. © 2010 IEEE.

关键词： Quality of service

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Threshold signature scheme based on non-interactive Diffie-Hellman signature

Threshold signature scheme based on non-interactive Diffie-H...

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1st international conference on networking and distributed computing, ICNDC 2010

作者： Wang, Xiuqun Huang, Lican Key Laboratory for Information System Security Ministry of Education Tsinghua University and Beijing Certification Authority Beijing China Institute of Network and Distributed Computing Zhejiang Sci-Tech University Hangzhou China

ISBN: (纸本)9780769542072

We present a threshold signature based on non-interactive Diffie-Hellman signature. It works in asynchronous communication system and can tolerate Byzantine faults with optimal resiliencen ≥ 3t + 1, where n is the number of the participants and t is the number of the fault participants. The security of this scheme bases on discrete logarithm intractability assumption. We give the security analysis of our proposed threshold signature scheme. © 2010 IEEE.

关键词： Authentication

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Large scale distributed database systems based on semantic P2P networks

Large scale distributed database systems based on semantic P...

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1st international conference on networking and distributed computing, ICNDC 2010

作者： Huang, Lican Virtual, Hangzhou Institute of Networking and Distributed Computing Zhejiang Sci-Tech University HangZhou 310018 China Zone Information Technology Co. Ltd. Hangzhou 310018 China

ISBN: (纸本)9780769542072

There are the trends that the users hope to retrieve information among lots of individual database systems distributed in lots of virtual organizations. To connect all these individual database systems into a virtual database system is a significant issue. This paper presents VIRGO-DDBMS, a framework of distributed database system based on virtual hierarchical tree Grid organizations(VIRGO) P2P network. The table space are classified as hierarchical domains like DNS. The servers hosting database systems joins several groups of VIRGO network according to the owned tables' domains. VIRGO-DDBMS is effective for data update and retrieve by using distributed SQL statements. We use the policies which cache the host machines' addresses of database systems to avoid the overload of traffic of root nodes in tree structure. The proposal presented here can construct a virtual distributed database system which can manages huge volumes of data by connecting all database systems together which are owned by the individual virtual organizations. © 2010 IEEE.

关键词： Semantics

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A Landmark Aware Content Searching Scheme in Opportunistic Networks

A Landmark Aware Content Searching Scheme in Opportunistic N...

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6th international conference on Wireless Communications, networking and Mobile computing (WICOM)

作者： Liu Yazhi Niu Jianwei Ma Jian Beijing Univ Posts & Telecommun State Key Lab Networking & Switching Technol Beijing 100876 Peoples R China Beihang Univ Sch Comp Sci & Engn Beijing 100191 Peoples R China Nokia Res Ctr Beijing 100176 Peoples R China

ISBN: (纸本)9781424437092

The spacial distribution of nodes in the Opportunistic networks is uneven in the real scenarios. There are some landmarks with high node density distributed in the network area. Based on the uneven distribution character of nodes in the Opportunistic Networks, a landmark aware content searching scheme (LACS) is proposed. The scheme proposed here is composed of two sub-schemes, latent spray scheme in the home landmark and searching message infection scheme between landmarks, both of which control the searching message carrier amount in the landmarks, and then control the latency of content searching. The simulation results show that the content searching scheme proposed in this paper outperforms the other schemes by 10% in hit ratio and by 5% in latency of content searching.

关键词： The Opportunistic Networks Content Searching Content dissemination

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Resources integration and binding in distributed collaborative design process

Resources integration and binding in distributed collaborati...

引用

international conference on networking and distributed computing

作者： Li, Nan College of Mechanical Engineering Beijing Technology and Business University Beijing China

ISBN: (纸本)9780769542072

Current CAD/CAE systems are not ideal for engineering design in distributed heterogeneous design resources. This paper investigates the approach and mechanism of distributed design resources integration and binding in collaborative design process based on service-oriented architecture. Service-ORiented computing EnviRonment (SORCER) is employed to build a highly flexible distributed network components environment - design service space. A SORCER Based Collaborative Design Environment is presented. As the key modules of the system, Design activity modeling, Design interface, design context and design process graph is introduced in detail. Design Behavior Matrices is designed as the binding mechanism to drive distributed design resources integration process during the design tasks execution time. At last, this paper introduces a engineering layout design to demonstrate the mechanism and the system. This system aims to enable asynchronous distributed collaborative design with ease of alternative design services, reduced design cycles, and improved design resolution quality. © 2010 IEEE.

关键词： Product design

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Differential Forms for Target Tracking and Aggregate Queries in distributed Networks 10

Differential Forms for Target Tracking and Aggregate Queries...

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16th Annual international conference on Mobile computing and networking / 11th ACM international Symposium on Mobile Ad Hoc networking and computing (MobiCom/MobiHoc)

作者： Sarkar, Rik Gao, Jie SUNY Stony Brook Dept Comp Sci Stony Brook NY 11794 USA

ISBN: (纸本)9781450301824

Consider mobile targets moving in a plane and their movements being monitored by a network such as a field of sensors. We develop distributed algorithms for in-network tracking and range queries for aggregated data (for example returning the number of targets within any user given region). Our scheme stores the target detection information locally in the network, and answers a query by examining the perimeter of the given range. The cost of updating data about mobile targets is proportional to the target displacement. The key insight is to maintain in the sensor network a function with respect to the target detection data on the graph edges that is a differential one-form such that the integral of this one-form along any closed curve C gives the integral within the region bounded by C. The differential one-form has great flexibility making it appropriate for tracking mobile targets. The basic range query can be used to find a nearby target or any given identifiable target with cost O(d) where d is the distance to the target in question. Dynamic insertion, deletion, coverage holes and mobility of sensor nodes can be handled with only local operations, making the scheme suitable for a highly dynamic network. It is extremely robust and capable of tolerating errors in sensing and target localization. Due to limited space, we only elaborate the advantages of differential forms in tracking of mobile targets. The same routine can be applied for organizing many other types of informations, for example streaming scalar sensor data (such as temperature data field), to support efficient range queries. We demonstrate through analysis and simulations that this scheme compares favorably with existing schemes that use location services for answering aggregated range queries of target detection data.

关键词： Multi-Target Tracking Range Queries Differential Forms Sensor Networks

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MAC Protocol for distributed Relay-Assisted Cognitive Radio Networks

MAC Protocol for Distributed Relay-Assisted Cognitive Radio ...

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6th international conference on Wireless Communications, networking and Mobile computing (WICOM)

作者： Fan, Xiaokun Liu, Jing Beijing Univ Posts & Telecommun Beijing Peoples R China

ISBN: (纸本)9781424437092

Cognitive radio technology can improve spectrum efficiency by allowing potential secondary users (SUs) to use licensed spectrum when primary users (PUs) are absent. How to share and allocate the unoccupied spectrum among SUs directly affects spectrum utilization. Relay-assisted transmitting in cognitive radio networks (CRN) is an effective technology to improve spectrum utilization and increase transmitting range. This paper proposes a MAC protocol for CRN in which relay technology is adopted. According to whether SUs' state messages are transmitted by certain unchangeable available common channel (ACC) in CRN, two kinds of mechanism for data exchanging are presented. We further propose an ACC assignment algorithm in order to increase SUs system's total throughput and decrease interference to other neighboring SUs. Furthermore, we present performance results of our mechanism that applied to a SUs system based on opportunistic spectrum access, which proves the benefits of our mechanism.

关键词： cognitive radio networks cooperative relay MAC protocol

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One or Two Transmit Antennas?

One or Two Transmit Antennas?

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6th international conference on Wireless Communications, networking and Mobile computing (WICOM)

作者： Li, Zhigang Shao, Shihai Tang, Youxi Wang, Yi Zhang, Jiayin Univ Elect Sci & Technol China Natl Key Lab Sci & Technol Commun Chengdu 610054 Peoples R China Huawei Technol Co Ltd Corp Res Dept Shanghai Peoples R China

ISBN: (纸本)9781424437092

Two transmit antennas placed symmetrically for a linear cell downlink distributed antenna system with Alamouti space-time block coding over Rayleigh fading channels. For mobile station located in different places in the cell, which mode should be selected by base station from one transmit antenna or two transmit antennas? Aiming to solve this problem, a transmit mode selection scheme is developed based on received power. In the proposed scheme, the difference of received power from different transmit mode is compared with the preset threshold for deciding the mode to minimize bit error probability. Numerical and simulation results indicate that, under the condition of distance between transmit antennas 500m and standard deviation of shadowing 8dB, when the distance between mobile station and transmit antenna is less than 80m, the mode with one transmit antenna is selected, and in this area, at the area averaged bit error probability of 10(-2), the proposed scheme gains transmit power about 1.5dBm relative to the distributed Alamouti scheme with two antennas.

关键词： transmit mode selection bit error probability distributed antenna system space-time block coding

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