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4th International Symposium on Neural networks, ISNN 2007

作者： Zhang, Zhiqiang Tang, Zheng Tang, GuoFeng Vairappan, Catherine Wang, XuGang Xiong, RunQun Faculty of Engineering Toyama University Gofuku 3190 Toyama shi 930-8555 Japan Institute of Software Chinese Academy of Sciences Beijing 100080 China Key Lab. of Computer Network and Information Integration Southeast University Nanjing 210096 China

ISBN: (纸本)9783540723929

The Eleman Neural network has been widely used in various fields ranging from temporal version of the Exclusive-OR function to the discovery of syntactic categories in natural language date. However, one of the problems often associated with this type of network is the local minima problem which usually occurs in the process of the learning. To solve this problem, we have proposed an error function which can harmonize the update weights connected to the hidden layer and those connected to the output layer by adding one term to the conventional error function. It can avoid the local minima problem caused by this disharmony. We applied this method to the Boolean Series Prediction Questions problems to demonstrate its validity. The result shows that the proposed method can avoid the local minima problem and largely accelerate the speed of the convergence and get good results for the prediction tasks. © Springer-Verlag Berlin Heidelberg 2007.

关键词： Neural networks

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Cost Optimization Method for Workflows with Deadline Constraints in Grids

Cost Optimization Method for Workflows with Deadline Constra...

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International Conference on computer Supported Cooperative Work in Design

作者： Yingchun Yuan Xiaoping Li Qian Wang Xia Zhu School of Computer Science and Engineering South-East University Nanjing China Faculty of Information Science Agricultural University of Hebei Baoding China Key Laboratory of Computer Network and Information Integration Ministry of Education South-East University Nanjing China School of Computer Science and Engineering Southeast University Nanjing 210096 P.R. China Key Laboratory of Computer Network and Information Integration (Southeast University) Ministry of Education Nanjing 210096 P.R. China. qwang@*** Key Laboratory of Computer Network and Information Integration (Southeast University) Ministry of Education Nanjing 210096 P.R. China

ISBN: (纸本)1424409624

Cost optimization for workflow applications with deadline constraints is fundamental and intractable in grids. In this paper, early tree is introduced to find an early feasible schedule for a workflow application. According to the early tree, a cost optimization algorithm is proposed. Taking into account the workflow total float, the workflow deadline is segmented to activity deadlines while keeping precedence constraints. Costs of all activities are locally optimized, so does the workflow cost. Experimental results show that the proposal that this approach can dramatically decrease workflow cost with different deadlines. Moreover, it outperforms other two leveling algorithms in performance on average.

关键词： Cost function Optimization methods Quality of service Delay Partitioning algorithms Constraint optimization Grid computing Collaborative work Design methodology computer science

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MULTI-AGENT BASED FRAMEWORK FOR DYNAMIC SCHEDULING SYSTEM

MULTI-AGENT BASED FRAMEWORK FOR DYNAMIC SCHEDULING SYSTEM

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2007 International Conference on Machine Learning and Cybernetics(IEEE第六届机器学习与控制论国际会议)

作者： XIAO-DONG ZHANG QIAN WANG XIAO-PING LI School of Computer Science &Engineering Southeast University 210096 Nanjing P.R .China Key Laboratory of Computer Network and Information Integration Southeast University Ministry of Education

Communication burden and security are important for agent-based scheduling architectures in uncertain and dynamic scheduling environments, which have not yet been fully solved in traditional *** this paper, a multi-agent based framework is *** network Protocol is combined with Marked-based negotiation protocol to get a trade-off between effectiveness and efficiency.A registration mechanism is given to reduce the communication *** Signature is adopted to enhance the *** well, XML is integrated with KQML to improve the *** with the existing methods, the proposed one is not only securer in data exchanging but also more effective for dynamic scheduling problems.

关键词： Multi-Agent Contract Net Protocol Digital Signature Scheduling

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Short group signature with IND-CCA2 full-anonymity

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Jisuanji Xuebao/Chinese Journal of computers 2007年第10期30卷 1865-1871页

作者： Zhang, Yue-Yu Chen, Jie Su, Wan-Li Wang, Yu-Min Key Laboratory of Computer Network and Information Security Xidian University Xi'an 710071 China

In CRYPTO 2004, a short group signature is proposed by Boneh, Boyen and Shacham, which is based on strong Diffie-Hellman (SDH) assumption and Decision Linear assumption. Thereafter it is denoted BBS. Only chosen plaintext attack (CPA) full-anonymity is achieved in BBS short group signature for CPA secure in linear encryption. In this case, adversary could not query an open oracle. However, when adversaries try to break the notion of chosen ciphertext attack (IND-CCA2) full-anonymity, they have the ability to query an open oracle in the current and strongest security model for group signatures. Hence adversaries can obtain the signer identity of the queried signature. This paper presents a new zero-knowledge protocol for SDH, which based on Cramer-Shoup encryption from the linear assumption. Using this protocol as a building block, a new short group signature is constructed in this paper, which is provable secure in the Bellare-Micciancio-Warinshi model. The scheme is of IND-CCA2-full-anonymity, which allows adversary querying open oracle when trying to attack the anonymity notion. And the signature is only 1704 bits in size.

关键词： Security of data

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Rights management scheme for DRM in authorized domain based on PMI

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Tongxin Xuebao/Journal on Communications 2007年第SUPPL.期28卷 107-111页

作者： Gao, Ming-Ding Pei, Qing-Qi Zeng, Xing-Wen Key Laboratory of Computer Network and Information Security Xidian University Xi'an 710071 China

The DRM technologies and the concept of authorized domain were introduced. The requirements of rights management for DRM in Authorized domain were analyzed from the examples of application scene. A rights management scheme for DRM in authorized domain based on PMI was proposed. The method can implement efficient management for DRM by the application of RO-AO chain and RBAC mechanism. Finally, a capability analysis of this scheme was presented.

关键词： information management

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Research on Usage Control Model with Delegation Characteristics Based on OM-AM Methodology

Research on Usage Control Model with Delegation Characterist...

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IFIP International Conference on network and Parallel Computing Workshops (NPC Workshops)

作者： Zhiyong Zhang Lin Yang Qingqi Pei Jianfeng Ma Key Laboratory of Computer Network and Information Security Ministry of Education Xidian University Xi'an China Electron. Information Engineering Coll. Henan University of Science and Technology Luoyang China The Research Institute Renesas Technology Corporation Beijing China

UCON ABC is a basic framework of next generation access control policy Usage Control that is composed of Authorization-oBlige-Condition components, but so far it lacks of important delegation characteristic. The paper analyses the behaviors of delegation in UCON based on OM-AM engineering principles, presents a formalized usage control model with delegation features using BNF Extensions, called as UCON D , and further articulates its hybrid architecture based on Client & Server Delegation Reference Monitors and relative key protocol functions. UCON D is an extension model of UCON ABC in the aspect of delegation authorization, and it resolves the delegation question of Usage Control Model. Moreover, we specify delegation procedure of an application for Digital Medium Resource Distribution System.

关键词： Access control information security Authorization Resource management Mechanical factors Access protocols Environmental management Design engineering Parallel processing Laboratories

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Comprehensive arctic atmosphere observing system and observed results for "system performance demonstration"

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Journal of the National Institute of information and Communications Technology 2007年第1-2期54卷 5-16页

作者： Murayama, Yasuhiro Ishii, Mamoru Kubota, Minoru Mori, Hirotaka Mizutani, Kohei Ochiai, Satoshi Kasai, Yasuko Kawamura, Seiji Tanaka, Yoshimasa Masuko, Harunobu Iguchi, Toshio Kumagai, Hiroshi Kikuchi, Takashi Sato, Kaoru Collins, Richard L. Watkins, Brenton J. Conde, Mark Bristow, William B. Smith, Roger W. Strategic Planning Office Strategic Planning Department Space Environment Group Applied Electromagnetic Research Center National Institute of Information and Communications Technology Key Technology Research Supporting Group Key Technology Research Promotion Environment Sensing and Network Group Applied Electromagnetic Research Center Transdisciplinary Research Integration Center Research Organization of Information and Systems Applied Electromagnetic Research Center Solar-Terrestrial Environment Laboratory Nagoya University School of Science University of Tokyo University of Alaska Fairbanks University of Alaska Fairbanks Geophysical Institute University of Alaska

The "middle atmosphere", defined as the atmospheric layer at altitudes from approximately 10 to 100 km, has been stressed as a region important in global environment and climate change studies;importance is also stressed on the Arctic region where the global warming is predicted to appear most predominantly. The "Alaska Project", an international joint research project with National Institute of information and Communications Technology (NICT) and Geophysical Institute of University of Alaska Fairbanks, developed radio/optical technology and instruments which are effective for global environment and related atmospheric/space science studies. Project overview and results are shown the article.

关键词： Arctic engineering

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A structured P2P system with match path and probability balance tree

A structured P2P system with match path and probability bala...

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First International Multi- Symposiums on computer and Computational Sciences, IMSCCS'06

作者： Xu, L.B. Wu, G.X. You, F.Q. Key Laboratory of Computer Network and Information Integration Southeast University Nanjing 210096 China

ISBN: (纸本)0769525814

Excellent P2P network infrastructure should support scalability and efficient search simultaneity. The intelligent routing mechanisms have flexible query expression but hold low scalability and recall rate. Contrastively, DHTs are scalable but either difficult to organize or too expensive for maintenance. A new structured P2P model is proposed in which resource storages are organized by match path and random access method. When an approximately balance distributed character is obtained, nodes will keep high search efficiency and low maintenance cost. The system supports various query models, has load balancing capability and high scalability, and ensures search range of each node can cover entire network. The system runs without any center service while all nodes simultaneously take index storage, data storage and routing task to drive network by only maintaining a little local information. © 2006 IEEE.

关键词： Distributed computer systems

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Design and Analysis of a Multiscale Active Queue Management Scheme

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Journal of computer Science & Technology 2006年第6期21卷 1022-1030页

作者：纪其进董永强 School of Computer Science and Engineering Southeast University Nanjing 210096 P.R. China Key Laboratory of Computer Network and Information Integration of Ministry of Education Southeast University Nanjing 210096 P.R China

Since Internet is dominated by TCP-based applications, active queue management （AQM） is considered as an effective way for congestion control. However, most AQM schemes suffer obvious performance degradation with dynamic traffic. Extensive measurements found that Internet traffic is extremely bursty and possibly self-similar. We propose in this paper a new AQM scheme called multiscale controller （MSC） based on the understanding of traffic burstiness in multiple time scale. Different from most of other AQM schemes, MSC combines rate-based and queue-based control in two time scales. While the rate-based dropping on burst level （large time scales） determines the packet drop aggressiveness and is responsible for low and stable queuing delay, good robustness and responsiveness, the queue-based modulation of the packet drop probability on packet level （small time scales） will bring low loss and high throughput. Stability analysis is performed based on a fluid-flow model of the TCP/MSC congestion control system and simulation results show that MSC outperforms many of the current AQM schemes.

关键词： active queue management multiscale traffic burstiness fluid-flow model stability analysis

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Some Issues on computer networks:Architecture and key Technologies

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Journal of computer Science & Technology 2006年第5期21卷 708-722页

作者：顾冠群罗军舟 School of Computer Science and Engineering Southeast UniversityNanjing 210096P.R.China Key Laboratory of Computer Network and Information Integration(Sout-heast University) Ministry of Education Nanjing 210096P.R.China

The evolution of computer networks has experienced several major steps, and research focus of each step has been kept changing and evolving, from ARPANET to OSI/RM, then HSN （high speed network） and HPN （high performance network）. During the evolution, computer networks represented by Internet have made great progress and gained unprecedented success. However, with the appearance and intensification of tussle, along with the three difficult problems （service customizing, resource control and user management） of modern network, it is found that traditional Internet and its architecture no longer meet the requirements of next generation network. Therefore, it is the next generation network that current Internet must evolve to. With the mindset of achieving valuable guidance for research on next generation network, this paper firstly analyzes some dilemmas facing current Internet and its architecture, and then surveys some recent influential research work and progresses in computer networks and related areas, including new generation network architecture, network resource control technologies, network management and security, distributed computing and middleware, wireless/mobile network, new generation network services and applications, and foundational theories on network modeling. Finally, this paper concludes that within the research on next generation network, more attention should be paid to the high availability network and corresponding architecture, key theories and supporting technologies.

关键词： computer network tussle resource control network management security middleware wireless/mobile network modeling high availability network

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