As the web continues to increase in size, the relative coverage of web search engine is decreasing, and search tools that combine the results of multiple search engines are becoming more valuable. We present a genetic...
详细信息
High false alarm rate and time-space cost of rule extraction and detection limit the application of machine learning in real Intrusion Detection System (IDS), and IDS cannot satisfy most system performance requirement...
详细信息
Wide-area distributed systems such as data sharing, computational grids, and multimedia are increasingly being deployed in a large-scale, heterogeneous and dynamic distributed environment with geographically scattered...
详细信息
Wide-area distributed systems such as data sharing, computational grids, and multimedia are increasingly being deployed in a large-scale, heterogeneous and dynamic distributed environment with geographically scattered resources. However, most current resource management approaches are unable to simultaneously deal with the characteristics of such an environment. This paper presents an efficient DHT-based locality-aware resource management mechanism. Taking advantage of a DHTpsilas hierarchical structure, it uses a single DHT to achieve multi-resource management with low overhead. Moreover, it has high capability to handle the characteristics of distributed systems. Simulation results demonstrate the effectiveness of the mechanism in comparison with other resource management algorithms. The mechanism performs no worse than existing locality-aware approaches and exhibits high resilience to dynamism. It also reduces the overhead of the locality-aware algorithms due to the elimination of unnecessary communications by shrinking probing scope. In addition, it yields significant improvements in the efficiency of resource discovery.
In this paper, we have studied a common Web service composition problem, the syntactic matching problem, where the output parameters of a Web service can be used as the input parameters of another Web service. Many au...
详细信息
With the growth of adaptive educational systems available to students, semantic integration of user modeling information from these systems is emerging into an important practical task. Ontologies can serve as the maj...
详细信息
ISBN:
(纸本)9789868473522
With the growth of adaptive educational systems available to students, semantic integration of user modeling information from these systems is emerging into an important practical task. Ontologies can serve as the major representational framework for such integration. In this paper, we report an experiment on integration of domain models of two different adaptive systems. The differences in domain representations require use of manual mappings provided by human experts. The structure of domain ontology helps to refine the resulting mappings and align human expertise.
Our motivation for knowledge discovery in Chinese medicine is two folds: innovate and verify effective data mining technology in realistic applications;and update Chinese medical informatics. This paper focuses on the...
详细信息
Body sensor network (BSN) is a wireless network of implantable and/or wearable smart sensors. They can be deployed in medical applications, such as patients monitoring inside or outside hospital environment, as well a...
详细信息
Body sensor network (BSN) is a wireless network of implantable and/or wearable smart sensors. They can be deployed in medical applications, such as patients monitoring inside or outside hospital environment, as well as in high performance professional sports and other non human related applications. The size of a sensor node and its power consumption are major challenges in the design of implantable BSNs. The focus of this paper is to propose the definition of a new light weight communications protocol for the BSNs applications using very small sensor nodes supporting ultra low energy consumption.
In the realm of substation automation (SA), communication infrastructure plays a vital role in mediating between physical and virtual worlds of substation. Specification of data exchanges through standardized communic...
详细信息
In the realm of substation automation (SA), communication infrastructure plays a vital role in mediating between physical and virtual worlds of substation. Specification of data exchanges through standardized communication stacks is therefore an important issue for all substation equipment manufacturers seeking to provide vendor interoperability. Nowadays competitive electric utility marketplace, reliable and real-time information become the key factor for reliable delivery of power to the end- users, profitability of the electric utility and customer satisfaction. The operational and commercial demands of electric utilities require a high-performance data communication network that supports both existing functionalities and future operational requirements. As communication arena is changing day by day, the need for efficient and reliable communication infrastructure to address SA is evident. In this respect, a communication network constitutes the core of the SA, thus the design of cost-effective and reliable network architecture is a crucial task. Most of the existing communication networks claim to address the need of communication architecture for SA but in some regard these claims just could not fulfill the constraints imposed by highly available environment for SA. This paper presents a survey and analysis of the current state-of-the-art communication infrastructure in the SA. As Ethernet technology becomes more reliable and also widely available with fiber optical communication so this paper also examines the key issues and requirements for Ethernet in the substation environment and also opens some research challenges.
Digital broadcasting as new generation broadcasting offers a new opportunity for interactive services. For variety services of broadcasting, the broadcasting metadata becomes increasingly important and one of the meta...
详细信息
暂无评论