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International Conference on Communications, Circuits and Systems (ICCCAS)

作者： Li-Bo Xu Guo-Xin Wu Jian-Fei Li Key Laboratory of Computer Network and Information Integration South-East University Nanjing China

ISBN: (纸本)0780390156

In high-speed Internet links, an effective and efficient packet sampling technology in traffic measurement becomes more and more indispensable for its benefits of reducing data quantity and saving various resources. We address the issue of how to keep or improve sampling accuracy during burst or fluctuation periods. In the paper, an adaptive packet-level sampling method on different traffic fluctuation and burst scales is proposed. The method can dynamically adjust each packet sampling probability dependent on the magnitude of traffic fluctuation. The adjustment granularity is fine because it reaches a single packet. By contrast to the static random sampling method in experiments using real traffic traces, we show that the proposed adaptive sampling has a great capability to trace traffic fluctuations and improve sampling accuracy through capturing more fluctuation or burst details.

关键词： Sampling methods Telecommunication traffic Fluctuations Communication system traffic control Probes High-speed networks Laboratories computer networks Electronic mail IP networks

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TCS-Chord: An Improved Routing Algorithm to Chord Based on the Topology-aware Clustering in Self-organizing Mode

TCS-Chord: An Improved Routing Algorithm to Chord Based on t...

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International Conference on Semantics, Knowledge and Grid (SKG)

作者： Liu Ye Yang Peng Chu Zi Wu Jiagao Key Laboratory of Computer Network and Information Integration Ministry of Education Southeast University Nanjing China

The study on semantic routing efficiency of DHTP2P networks is a key element to promote the development of P2P networks, it is critical for a P2P routing algorithm to be aware of the network physical topology, which leads to improvement of the routing efficiency. By analyzing the Hashing function's properties, some novel logical connections are presented among the destination node, the Chord semantic routing relay node sequence, and the ID of clustering neighbor nodes. This paper describes TCS-Chord (an improved routing algorithm to Chord based on the Topology-aware Clustering in Self-organizing mode) to improve the efficiency of Chord routing. Since the clustering nodes only have local views in the self-organizing mode, some rules are applied for a node to learn other nodes' physical topology-aware locations. The TCS-Chord's routing algorithm is described completely, and our experiments also indicate that TCS-Chord can improve the Chord semantic routing efficiently.

关键词： Routing Clustering algorithms network topology Performance analysis Relays Power capacitors Thyristors Delay Load management Laboratories

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A new type of digital multisignature

A new type of digital multisignature

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International Conference on computer Supported Cooperative Work in Design

作者： Ying-Long Wang Lian-Hai Wang The School of Information Science and Engineering Shandong University Jinan China The Key Laboratory for Computer Network Jinan China

ISBN: (纸本)184000025

information security is very important in CSCW and digital signature is one of the valid methods to resolve these problems. Based on research on multisignature and proxy signature, we present a new type of signature: Multisignature with proxy, in which some signers can delegate their proxies to do the signatures. The common multisignature and the proxy multisignature are specific to this signature. Two new schemes of multisignatures mingled with proxy signers are introduced in this paper, and their security issues are analyzed as well.

关键词： Digital signatures Security Cryptography Authentication information science Laboratories computer networks Office automation Organizing Broadcasting

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Modeling the intrusion by using capability of attackers

Modeling the intrusion by using capability of attackers

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International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Liang-Min Wang Jian-Ming Zhang Jian-Feng Ma The Department of Computer Science Jiangsu University Zhenjiang China The Key Laboratory of Computer Network and Information Security Ministry of Education Xidian University China

Modeling the intrusion is an open problem which is necessary to be solved in intrusion tolerance system. A model of state transition and its constructing algorithm is presented which is described with the capability of attackers. With the attention on the influence upon system, the intrusion is described by the capability of the attacker in this model. And the intrusion model is formalized by the definition of meta-attack. Then an approach to cluster the hyper-alerts into meta-attack using correlation-algorithm is presented. In the end, the method on modeling the intrusion by meta-attack is presented, and the proof of existence and uniqueness of the model constructed by this approach are given.

关键词： Intrusion detection Logic Clustering algorithms Control systems Buffer overflow computer science Laboratories computer networks information security computer science education

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A new approach for early detection of Internet worms based on connection degree

A new approach for early detection of Internet worms based o...

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International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Chen Bo Bin-Xing Fang Xiao-Chun Yun National Computer Information Content Security Key Laboratory Harbin Institute of Technology Harbin China National Computer Network and Information System Security Administration Center Beijing China

In recent years, Internet-scale worm incidents occurred many times. People wonder at the speediness of the worm spread and the severe damage to the Internet. So people began to find methods to detect worms as quickly as possible. The paper first describes a worm behavior and propagation model. And then based on it, a new approach for early detection of Internet worms is proposed. This approach determines whether a worm incident has occurred by the change of the computers' connection degree. The approach is proved to be effective on early detection of unknown worms by experiments.

关键词： Internet computer worms computer networks computer security information security National security Economics Web server Intrusion detection computer hacking

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Dynamic routing based on real-time traffic information in LBS

Dynamic routing based on real-time traffic information in LB...

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MIPPR 2005: Geospatial information, Data Mining, and Applications

作者： Zheng, Nianbo Li, Qingquan Song, Ying Research Center of Spatial Information and Network Communication Wuhan University 129 Luoyu Road Wuhan 430079 China State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing Wuhan University 129 Luoyu Road Wuhan 430079 China Deparment of Computer and Electronics Science Hubei University of Economics 1 Yanghu Road Wuhan 430205 China

Location based services (LBS) are capturing global spotlights increasingly, in which users tend to pick up navigation service as their favorites. This paper examines the dynamic routing problems based on real-time traffic information in LBS. At first, the overall structure of dynamic navigation system is illustrated, which is composed of four ingredients: traffic data collection, digital road map, static routing and dynamic re-routing. Traffic data collection is the task of traffic information center (TIC), where various sources of data are fused into link travel times that are used as criteria to choose candidates in path determining. Digital road map includes digital road network and historical traffic data, where the topology relationship of road network is elementarily explored and the method to represent statistical traffic data is referred to. Routing with historical traffic data and dynamic re-routing with live traffic data are two main functions of dynamic navigation service. The flow of dynamic re-routing algorithm is exhibited. Lastly, a first-in-first-out (FIFO) time-depend shortest path algorithm is discussed for dynamic routing, which adopts the adaptive A* algorithm based on binary heap priority queue and RB-tree.

关键词： Telecommunication traffic

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A Mathematical Approach to Disaster Recovery Planning

A Mathematical Approach to Disaster Recovery Planning

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International Conference on Semantics, Knowledge and Grid (SKG)

作者： Kun Wang Zhonghai Yin Feng Yuan Lihua Zhou Key Laboratory of Computer Network and Information Security of the Ministry of Education Xidian University Xi'an China National Info Security Engineering and Technology Research Center Beijing China

It is crucial for highly security-critical information systems to accurately control the disaster recovery activities. Using optimization theory, we present a disaster recovery planning mathematical model. The model uses mathematical method to express diverse entities in information and disaster recovery system such as applications, facilities, resources, sub disaster recovery plans, budget, etc. It classifies various resources according to their utilization and payment, and identifies the significance of applications and the conflicts among sub disaster recovery plans. Through expressing relationships among applications, facilities, resources and sub plans, this model selects the best set of sub plans. This model has less subjective parameter and can evaluate disaster recovery planning objectively and quantitatively.

关键词： Mathematical model Testing information security information systems Control systems Risk management Technology planning Laboratories computer networks computer science education

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Study of Secure Complicated information System Architecture Model

Study of Secure Complicated Information System Architecture ...

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International Conference on Semantics, Knowledge and Grid (SKG)

作者： Kun Wang Ruidan Su Zengxin Li Zhen Cai Lihua Zhou Key Laboratory of Computer Network and Information Security of the Ministry of Education Xidian University Xi'an China National Info Security Engineering and Technology Research Center Beijing China

Complicated information system (CIS) contains many inhomogeneous applications which require security, interoperability, extensibility. The paper presents a secure CIS architecture model to conduct the construction or reconstruction of CIS. Using layered method, it divides CIS into modules and reduces system complexity. Web service technology is widely adopted in layers to fulfill interoperability and extensibility. It uses encryption support layer, security protection and reliability support layer to guarantee system security and stability in different aspects. It uses system management layer to make CIS administrable. It suits highly security-critical environment such as government and bank. Been properly simplified, it can be applied to relative simple information system too.

关键词： information systems information security Computational Intelligence Society Communication system security National security Electronic government Operating systems Protocols Communication standards computer security

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A Disaster Recovery System Model in an E-government System

A Disaster Recovery System Model in an E-government System

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IEEE International Conference on Parallel and Distributed Computing, Applications and Technologies (PDCAT)

作者： Kun Wang Lihua Zhou Zhen Cai Zengxin Li Key Laboratory of Computer Network and Information Security of the Ministry of Education Xidian University Xi'an China National Info Security Engineering and Technology Research Center Beijing China

We present a Robust Disaster Recovery System Model (RDRSM) for highly security-critical systems to realize continuous service. Through strengthening safe communication ability, RDRSM guarantees secure and reliable command on disaster recovery. It uses selfsupervision function to monitor the integrality and security of system itself. Through GIS, this model makes disaster recovery system easier to use, manage and maintain. RDRSM possesses features of security, robustness and controllability and can be applied to environments such as e-government and bank. This model successfully conducted the construction of an important e-government disaster recovery system, which verified its feasibility and the significance of its components, such as disaster recovery planning, system supervision and robust communication support.

关键词： Electronic government Robustness Communication system security Stability Disaster management computer networks information security Monitoring Geographic information Systems Protection

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AN IMPROVED BICLUSTERING ALGORITHM AND ITS APPLICATION TO GENE EXPRESSION SPECTRUM ANALYSIS

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Genomics, Proteomics & Bioinformatics 2005年第3期3卷 189-193页

作者： Hua Qu Liu-Pu Wang Yan-Chun Liang Chun-Guo Wu College of Software Key Laboratory of Symbol Computation and Knowledge Engineering of the Ministry of Education Jilin University Changchun 130012 China Guangzhou Institute of China Telecom Guangzhou 510630 China College of Computer Science and Technology Key Laboratory of Symbol Computation and Knowledge Engineering of Ministry of Education Jilin University Changchun 130012 China Key Laboratory of Information Science and Engineering of the Ministry of Railway/Key Laboratory of Advanced Information Science and Network Technology of Beijing Beijing Jiaotong University Beijing 100044 China.

Cheng and Church algorithm is an important approach in biclustering algorithms. In this paper, the process of the extended space in the second stage of Cheng and Church algorithm is improved and the selections of two important parameters are discussed. The results of the improved algorithm used in the gene expression spectrum analysis show that, compared with Cheng and Church algorithm, the quality of clustering results is enhanced obviously, the mining expression models are better, and the data possess a strong consistency with fluctuation on the condition while the computational time does not increase significantly.

关键词： biclustering algorithm gene expression pedigree analysis Cheng and Church algorithm

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