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Articles 1 - 10 of 10
Full-Text Articles in Physical Sciences and Mathematics
Pbtrust: A Priority-Based Trust Model For Service Selection In General Service-Oriented Environments, Xing Su, Minjie Zhang, Yi Mu, Kwang Mong Sim
Pbtrust: A Priority-Based Trust Model For Service Selection In General Service-Oriented Environments, Xing Su, Minjie Zhang, Yi Mu, Kwang Mong Sim
Associate Professor Minjie Zhang
How to choose the best service provider (agent), which a service consumer can trust in terms of the quality and success rate of the service in an open and dynamic environment, is a challenging problem in many service-oriented applications such as Internet-based grid systems, e-trading systems, as well as service-oriented computing systems. This paper presents a Priority-Based Trust (PBTrust) model for service selection in general service-oriented environments. The PBTrust is robust and novel from several perspectives. (1) The reputation of a service provider is derived from referees who are third parties and had interactions with the provider in a rich …
A Fuzzy-Based Approach For Partner Selection In Multi-Agent Systems, Fenghui Ren, Minjie Zhang, Quan Bai
A Fuzzy-Based Approach For Partner Selection In Multi-Agent Systems, Fenghui Ren, Minjie Zhang, Quan Bai
Associate Professor Minjie Zhang
Traditional negotiation approaches pay intensive attention to decision making models in order to reach the optimal agreements, while placing insufficient efforts on the problem of partner selection. In this paper, a fuzzy-based approach for partner selection in multi-agent systems is proposed. By employing both the fuzzy logic and the extended dual concern model, agents can adapt their individual behaviors for partner selection in negotiation. The proposed approach has three merits, which are: (1) both the agent’s own benefit and its potential partners’ benefits are considered for partner selection in negotiation; (2) by employing the extended dual concern model, agents’ attitudes …
Secure Mobile Agents With Designated Hosts, Qi Zhang, Yi Mu, Minjie Zhang, Robert H. Deng
Secure Mobile Agents With Designated Hosts, Qi Zhang, Yi Mu, Minjie Zhang, Robert H. Deng
Associate Professor Minjie Zhang
Mobile agents often travel in a hostile environment where their security and privacy could be compromised by any party including remote hosts in which agents visit and get services. It was proposed in the literature that the host visited by an agent should jointly sign a service agreement with the agent's home, where a proxy-signing model was deployed and every host in the agent system can sign. We observe that this actually poses a serious problem in that a host that should be excluded from an underlying agent network could also send a signed service agreement. In order to solve …
Ontology-Based Resource Descriptions For Distributed Information Sources, Hui Yang, Minjie Zhang
Ontology-Based Resource Descriptions For Distributed Information Sources, Hui Yang, Minjie Zhang
Associate Professor Minjie Zhang
Content-based resource description is the key to find appropriate information sources that are most likely to contain the relevant documents for a given user query. However, semantic heterogeneity makes it difficult to acquire accurate and meaningful resource descriptions from distributed, heterogeneous information sources. To address this problem, we describe an ontology-based approach which uses domain-specific ontologies to extract content-related information from information sources, and to generate ontology-based resource descriptions. The preliminary experimental results demonstrate that our ontology-based approach could improve selection accuracy.
Ontology-Based Knowledge Representation For A P2p Multi-Agent Distributed Intrusion Detection System, Dayong Ye, Quan Bai, Minjie Zhang
Ontology-Based Knowledge Representation For A P2p Multi-Agent Distributed Intrusion Detection System, Dayong Ye, Quan Bai, Minjie Zhang
Associate Professor Minjie Zhang
Many research efforts on application of ontology in network security have been done in the past decade. However, they mostly stop at initial proposal or focus on framework design without detailed representation of intrusion or attack and relevant detection knowledge with ontology. In this paper, the design and implementation of ontology-based knowledge representation for a peer-to-peer multi-agent distributed intrusion detection system (ontology-based MADIDS) are introduced. An example which demonstrates the representation of an attack with ontology and the relevant detection process is also presented. In ontology-Based MADIDS, ontology technique enables peers in the system and agents in one peer to …
P2p Distributed Intrusion Detections By Using Mobile Agents, Dayong Ye, Quan Bai, Minjie Zhang, Zhen Ye
P2p Distributed Intrusion Detections By Using Mobile Agents, Dayong Ye, Quan Bai, Minjie Zhang, Zhen Ye
Associate Professor Minjie Zhang
Traditional hierarchical intrusion detection systems have a central manager which attracts hackers to attack and might overload when there are too many client requests. To overcome these drawbacks, some researchers suggested to apply Peer-to-Peer approaches in intrusion detection. Most current Peer-to-Peer intrusion detection systems only allow hosts to collect related information from "neighbours" (one hop hosts). The limitation of information sources may lead a system to make inaccurate decisions. In this paper, we propose a Mobile Agent Based Peer-to-Peer Distributed Intrusion Detection Framework. Agents are included in this framework to achieve intrusion detections. In addition, a mobile agent migration strategy …
A Coloured Petri Net Based Strategy For Multi-Agent Scheduling, Q. Bai, Minjie Zhang, H. Zhang
A Coloured Petri Net Based Strategy For Multi-Agent Scheduling, Q. Bai, Minjie Zhang, H. Zhang
Associate Professor Minjie Zhang
In the last decade, the focus of agent research has shifted from single agent systems to multi-agent systems (MASs). Dynamic agent coordination is one of the challenge problems of multi-agent research. One coordination problem is how to achieve agent scheduling under open dynamic environments. Petri Nets (PNs) and Coloured Petri Nets (CPNs) are system study tools that provide an appropriate mathematical formalism for the description, construction and analysis of distributed and concurrent systems. In this paper, we present a CPN based strategy to schedule and allocate new tasks to suitable agent(s) or agent combinations. In this strategy, through using CPNs …
An Agent-Based Peer-To-Peer Grid Computing Architecture, J. Tang, Minjie Zhang
An Agent-Based Peer-To-Peer Grid Computing Architecture, J. Tang, Minjie Zhang
Associate Professor Minjie Zhang
We propose a multi-agent based peer-to-peer grid computing architecture in this paper to solves the issues that the conventional grid architecture is limited in modeling computer systems with highly dynamic and autonomous computing resources, and its super-local resource management and scheduling strategy limits the utilization of the computing resources. Besides, the new architecture provides reasonable compatibility and interoperability with the conventional grid systems and clients.
An Agent-Based Peer-To-Peer Grid Computing Architecture, Jia Tang, Minjie Zhang
An Agent-Based Peer-To-Peer Grid Computing Architecture, Jia Tang, Minjie Zhang
Associate Professor Minjie Zhang
The conventional computing Grid has developed a service oriented computing architecture with a superlocal resource management and scheduling strategy. This architecture is limited in modeling computer systems with highly dynamic and autonomous computing resources due to its server-based computing model. The super-local resource management and scheduling strategy also limits the utilization of the computing resources. In this paper, we propose a multi-agent based Peer-to-Peer Grid computing architecture. This novel architecture solves the above issues, while provides reasonable compatibility and interoperability with the conventional Grid systems and clients. The main characteristics of this architecture are highlighted by its promising performance and …
An Ontology-Based Approach For Expert And Knowledge Mining In Complex Multi-Agent Systems, Minjie Zhang, Xijin Tang, Quan Bai, Jifa Gu
An Ontology-Based Approach For Expert And Knowledge Mining In Complex Multi-Agent Systems, Minjie Zhang, Xijin Tang, Quan Bai, Jifa Gu
Associate Professor Minjie Zhang
Complex problems require diverse expertise and multiple techniques to solve. In order to solve such problems, complex multi-agent systems include numbers of heterogeneous agents, which may include both of human experts and autonomous agents, to work together toward some complex problems. Most complex multi-agent systems are working in open domains. Due to heterogeneities and dynamic working environments, expertise and capabilities of agents might not be well estimated and presented in the system. Therefore, how to discover useful knowledge from human and autonomous experts, make more accurate estimation for experts' capabilities and to find out suitable expert(s) to solve incoming problems …