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Event-based Trust Framework Model in Wireless Sensor Networks

Event-based Trust Framework Model in Wireless Sensor Network...

引用

International Conference on Networking, Architecture, and Storage (NAS)

作者： Haiguang Chen Huafeng Wu Jinchu Hu Chuanshan Gao Department of Computer Science & Engineering Fudan University Shanghai China Mathematic and Science College Shanghai Normal University Shanghai China Merchant Marine College Shanghai Maritime University Shanghai China

The security of wireless sensor networks is ever more important nowadays. Most of the proposed security protocols in wireless sensor networks are based on authentication and encryption. But all of them only address part of the problem of security in wireless sensor networks. Recently, the use of reputation and trust systems has become an important secure mechanism in wireless sensor networks. In this paper we propose a new protocol ETSN to construct a trust framework model in wireless sensor networks. The ETSN will be more suitable than ATSN and RFSN in wireless sensor networks. The simulation results and analysis show that our scheme not only can fast detect the malicious nodes and scale well for wireless sensor networks, but also can distinguish trust rating with different event.

关键词： Wireless sensor networks Security Monitoring Peer to peer computing Biological system modeling Uncertainty Cryptography

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Reputation-based Trust in Wireless Sensor Networks

Reputation-based Trust in Wireless Sensor Networks

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International Conference on Multimedia and Ubiquitous engineering (MUE)

作者： Haiguang Chen Huafeng Wu Xi Zhou Chuanshan Gao Department of Computer Science and Engineering Fudan University Shanghai China Mathematic and Science College Shanghai Normal University Shanghai China

Wireless sensor networks (WSNs) are becoming more and more common. WSNs have many existing and envisioned applications due to their ease of deployment, particularly in remote areas. But the security of WSNs is still an issue. Some existing approaches mainly rely on cryptography to ensure data authentication and integrity. These approaches only address part of the problem of security in WSNs. However, these approaches are not sufficient for the unique characteristics and novel misbehaviors encountered in WSNs. Recently, the use of reputation systems has become an important mechanism in WSNs. In this paper we propose a reputation-based trust which borrows tools from probability, statistics and mathematics analysis. We have suggested a new term certainty used in trust system and we argued that the positive or negative outcomes for a certain event is not enough information to make a decision in WSNs. We build up a reputation space and trust space in WSNs, and define a transformation from reputation space to trust space. Finally, we discuss some important properties of them and point out some open problems in reputation system in WSNs.

关键词： Wireless sensor networks Cryptography Sensor phenomena and characterization mathematics Authentication Hardware Data security Statistical analysis Educational institutions computer science

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Trust Propagation and Aggregation in Wireless Sensor Networks

Trust Propagation and Aggregation in Wireless Sensor Network...

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Japan-China Joint Workshop on Frontier of computer science and Technology (FCST)

作者： Haiguang Chen Huafeng Wu Xiu Cao Chuanshan Gao Department of Computer Science and Engineering Fudan University Shanghai China Mathematic and Science College Shanghai Normal University Shanghai China

In a multi-hop wireless sensor networks (WSNs), these sensor nodes cooperate each other to form a network without using any infrastructure, which has a wide application due to their easy of deployment. But the security of WSNs is still an issue. Traditionally cryptographic mechanisms such as authentication and encryption only address part of the problem of security in WSNs. Recently, the use of reputation systems has become an important mechanism in WSNs. The trust management is still a very important problem for reputation systems in WSNs. In this paper we develop a formal treatment of trust management for WSNs. The main contribution of our paper is that we define two kinds of operators, propagation and aggregation. It can combine and diffuse trust rating of nodes in WSNs. Simulation results and analysis show that our proposed operators can detect the misbehavior sensor fast and limited the effect of malicious report the trust rating.

关键词： Wireless sensor networks Peer to peer computing Cryptography Authentication Communication system security Ad hoc networks computer science Uncertainty mathematics Educational institutions

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Agent-based Trust Model in Wireless Sensor Networks

Agent-based Trust Model in Wireless Sensor Networks

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ACIS International Conference on Software engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing (SNPD)

Wireless Sensor Networks (WSNs) have an excellent application to monitor environments such as military surveillance and forest fire. However, in many scenarios, WSNs are of interested to adversaries and these sensor nodes are deployed in open and unprotected environments, the security of WSNs is still an important issue. Traditionally cryptographic mechanisms such as authentication and encryption only address part of the problem of security in WSNs. In recent years, the use of reputation and trust systems has become an important mechanism for security in WSNs. In this paper, we develop a distributed agent- based trust model in WSNs. We also discuss some attacks in reputation and trust system, and offered some schemes to defense these attacks. The simulation results and analysis show that our model can detect the malicious nodes fast and accurately and efficiently prevent these attacks in WSNs.

关键词： Wireless sensor networks Peer to peer computing Cryptography Authentication Security computer science Uncertainty Monitoring Software engineering Artificial intelligence

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Key Feature and Rule-based Intrusion Detection for Wireless Sensor Networks

Key Feature and Rule-based Intrusion Detection for Wireless ...

引用

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

作者： Haiguang Chen Huafeng Wu Xi Zhou Chuanshan Gao Mathematic and Science College Shanghai Normal University Shanghai China Department of Computer Science and Engineering Fudan University Shanghai China

Wireless sensor networks (WSNs) have a wide application. However, they are of interest to adversaries and are susceptible to some types of attacks for they are deployed in unprotected environments. In this paper we use key feature and rule-based intrusions detection for WSNs. In our scheme, we investigate different defense rules and key features in WSNs to build efficient, accurate and effective intrusion detection systems (IDSs). We also propose a moving window function method to gather the current activity data. The scheme fits the demands and restrictions of WSNs. The scheme does not need any cooperation among other monitor nodes. Simulation results show that we proposed IDSs is efficient and accurate.

关键词： Intrusion detection Wireless sensor networks Ad hoc networks Sensor phenomena and characterization Communication system security Parallel processing mathematics Educational institutions computer science Application software

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Automatic Hierarchical Classification of Emotional Speech

Automatic Hierarchical Classification of Emotional Speech

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IEEE International Symposium on Multimedia Workshops (ISMW)

作者： Zhongzhe Xiao Emmanuel Dellandrea Weibei Dou Liming Chen Department of Mathematic a Computer Science LIRIS Laboratory Ecole Centrale de Lyon Ecully France Department of Electronic Engineering Tsinghua University Beijing China

ISBN: (纸本)9780769530840;0769530842

Speech emotion is high semantic information and its automatic analysis may have many applications such as smart human-computer interactions or multimedia indexing. As a pattern recognition problem, the feature selection and the structure of the classifier are two important aspects for automatic speech emotion classification. In this paper, we propose a novel feature selection scheme based on the evidence theory. Furthermore, we also present a new automatic approach for constructing a hierarchical classifier, which allows better performance than a global classifier as it is mostly used in the literature. Experimented on the Berlin database, our approach showed its effectiveness, scoring a recognition rate up to 78.64%.

关键词： Speech analysis Pattern recognition Spatial databases Testing Frequency Conferences Laboratories mathematics computer science Information analysis

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Identify group roles by text mining on group discussion in a Web-based learning system

Identify group roles by text mining on group discussion in a...

引用

International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Kuo-Liang Ou Chin-Yeh Wang Gwo-Dong Chen Department of Mathematic Education National Hsinchu Teachers College Computer Science and Information Engineering National Central University Taiwan

To explore how group member behaviour influences group performance, most studies stress on the influences of group leadership. However, the existence of member-roles is also an effective indicator of group performance, meanwhile; teachers have difficult to extract the member-roles which students play on a Web-based learning system. This research (1) assist teachers to extract group social communication patterns when monitoring students' social communication (2) assist teachers to extract member-roles that may influence the group learning performance, and (3) assist teachers to extract the influence of member-roles on group learning performance and help teachers to promote group to learn better on Web group learning environment. This research derives 11 member-roles by exploring communication with teachers expert knowledge and criteria, and extracting the influence on four primary group performance indicators: (1) individual grades, (2) group project grade, (3) resource-sharing frequency, and (4) group drop out rate. The statistical analysis method shows that most of the member-roles have significant influence on group learning performance.

关键词： Text mining Learning systems Monitoring Videoconference Information analysis computer science education Systems engineering education Educational institutions computer science Stress

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A sequential delimitative and combinatorial algorithm for a class of integer programming

A sequential delimitative and combinatorial algorithm for a ...

引用

Parallel and Distributed Computing, Applications and Technologies, PDCAT 2003 Proceedings

作者： Shi, Lian-Shuan Shan, Chai Lin, Da Computer Department Tianjin Voc. Tech. Teacher College Tianjin 300222 China Science Research Institute Shandong Engineering Institute Zibo 255012 China Mathematic Department Inner Mongolia University HuHeHoT 010021 China

In this paper, the algorithm was given for solving a class of integer programming problems, this algorithm generates all combinations according to a certain order of the magnitude of objective function by using a multi-level generating method of preceding for higher place. In the procedure of generating combinations, the algorithm eliminates a majority of infeasible and non-optimum combinations by using sequential delimitative and combinatorial method so that the algorithm has a higher computational efficiency.

关键词： Combinatorial mathematics

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A sequential delimitative and combinatorial algorithm for a class of integer programming

A sequential delimitative and combinatorial algorithm for a ...

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The Fourth International Conference on Parallel and Distributed Computing, Applications and Technologies

作者： Shi Lian-shuan Chai Shan Da Lin Computer Department Tianjin Vocational Technical Teacher College Science research institute Shandong Engineering Institute Mathematic Department Inner Mongolia University

In this paper,the algorithm was given for solving a class of integer programming problems,this algorithm generates all combinations according to a certain order of the magnitude of objective function by using a multi-level generating method of preceding for higher *** the procedure of generating combinations,the algorithm eliminates a majority of infeasible and non-optimum combinations by using sequential delimitative and combinatorial method so that the algorithm has a higher computational efficiency.

关键词： Integer programming Combinations Combinatorial optimization

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A sequential delimitative and combinatorial algorithm for a class of integer programming

A sequential delimitative and combinatorial algorithm for a ...

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Proceedings of The Fourth International Conference on Parallel and Distribyted Computing,Applications and Technologies(第四届并行与分布式计算应用与技术国际会议)

作者： Shi Lian-shuan Chai Shan Da Lin Computer Department Tianjin Vocational Technical Teacher College Tianjin 300222China Science research institute Shandong Engineering Institute.Zibo 255012 China Mathematic Department Inner Mongolia University HuHeHoT 010021 China

ISBN: (纸本)0780378407

关键词： Integer programming Combinations Combinatorial optimization

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