In this short paper, we present our solution to index, store and retrieve the domain knowledge. The main principle exploits Lucene to index the domain knowledge under guide of the domain schema. The method to map doma...
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ISBN:
(纸本)1595934804;9781595934802
In this short paper, we present our solution to index, store and retrieve the domain knowledge. The main principle exploits Lucene to index the domain knowledge under guide of the domain schema. The method to map domain knowledge structure into Lucene index structure, store and update the indices, and to transfer RDF-based query into Lucene's query are presented. Copyright 2007 ACM.
P2P technology has been widely adopted in live streaming system for its scalab.lity and low commercial cost. However, tree based system or mesh based system still has to face the constraint or tradeoff caused by its s...
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Any mistaken maintenance for the complicated and distributed grid can bring unpredictable disaster. Here we focus on the system availab.lity issues caused by service dependencies during the maintenance in grid. A nove...
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A series of problems arises with the emergence and fast development of grid. Among all the problems, one of them is how to smoothly connect heterogeneous grid platforms. There are a number of ways to solve this proble...
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Multimedia streaming and video on demand (VoD) services are among those hottest applications over the Internet. Traditional client/server pattern is stumbled due to the lack of scalab.lity and limitation of service ca...
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ISBN:
(纸本)0780393112
Multimedia streaming and video on demand (VoD) services are among those hottest applications over the Internet. Traditional client/server pattern is stumbled due to the lack of scalab.lity and limitation of service capacity. Peer-to-Peer paradigm has been introduced to solve these issues. The key idea is that peers not only receive multimedia stream but also serve multimedia data to others. In this paper, we present a novel scheme that builds a multimedia streaming and caching service on a distributed hash table (DHT) based overlay. We adopt DHT to establish a decentralized caching service. The location information of cached segments is distributed among different peers and the information about segments from the same video is organized into an application-level multicast group. We also propose a cache replace algorithm on each peer. In our simulation, our design achieves good scalab.lity with a low service reject rate. Besides, good load balance is also achieved as well as desired quality-of-service.
In this paper we present GPE4CGSP, which targets the interoperability between GPE (grid Programming Environment) and CGSP (Chinagrid Support Platform). The web services technique and gridftp data transfer protocol are...
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Peer-to-Peer (P2P) networks have been shown to be a promising approach to provide instant voice services over the Internet for its potential high scalab.lity. However, for one paired peers, how to efficiently transmit...
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Authorization mechanism is an effective technique of access control. In this paper, we construct a multidimensional authorization space for RSM with the guidance of the methodology of RSM design. This authorization sp...
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This paper proposes a grid-based Distributed Simulation Platform (GDSP). It is designed to break the limitation of legacy simulation supporting platform and to meet new requirements from large-scale, distributed, and ...
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This paper proposes a grid-based Distributed Simulation Platform (GDSP). It is designed to break the limitation of legacy simulation supporting platform and to meet new requirements from large-scale, distributed, and complicated systems. Simulation services are encapsulated by using web services technology, and they are basic elements of GDSP. With grid technology, GDSP enables users to share, access, and operate remote resource transparently. It is also easier to organize and manage simulation resources. GDSP improves the capability of fault tolerance and provides mechanism of using simulation resources securely. The research result shows that through this management mechanism, multiple users can share and monitor RTI resources, and manage the simulation collab.ratively and effectively. At the same time, the impact on real time of RTI caused by the system is minimum.
VCA (virtual client access) based grid information integration strategy is proposed in this paper that brings forward one efficient application framework with loosely coupled architecture. It encapsulates the virtual ...
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VCA (virtual client access) based grid information integration strategy is proposed in this paper that brings forward one efficient application framework with loosely coupled architecture. It encapsulates the virtual clients that are realized based on the API of the information systems as grid services to enable the grid can access the information systems as real client. VCA mode can be combined with local access control and task management seamlessly, and solve the resource conflicts between grid and local users so as to support the information sharing and cooperation widely and efficiently. The experiment shows that VCA modes can support the information sharing and cooperation widely and efficiently.
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