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International Journal of web engineering and Technology 2005年第2-3期2卷 145-147页

作者： Frasincar, Flavius Houben, Geert-Jan Van Ossenbruggen, Jacco Eindhoven University of Technology PO Box 513 NL-5600 MB Eindhoven Netherlands Centrum voor Wiskunde en Informatica PO Box 94079 NL-1090 GB Amsterdam Netherlands Department of Information Systems Erasmus University Rotterdam Netherlands Department of Information Systems Vrije Universiteit Brussel Belgium WISE Laboratory for Web and Information System Engineering Netherlands Technische Universiteit Eindhoven Netherlands CWI Netherlands Multimedia and Human-computer Interaction Group Netherlands

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Inter-cluster service lookup based on Jini 17

Inter-cluster service lookup based on Jini

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17th International Conference on Advanced information Networking and Applications, AINA 2003

作者： Tseng, Wen-Hsien Mei, Hsing Web Computing Lab. Computer Science and Information Engineering Department Fu Jen Catholic University Taiwan

ISBN: (纸本)0769519067

Jinis discovery protocols allow people to access requested services spontaneously in their own federations. However, to access services in remote federations, people have to know where the remote lookup services of them are located. This prerequisite is owing to Jinis discovery protocols relying on multicasting support, which becomes an issue when people want to access services across non-multicastable federations. Jini system, moreover, cannot handle the mobility. When mobile clients join into a new federation, they have to relocate services, which were installed in the initiating federations. All these problems are consequent on lack of communication between federations in the current Jini system. We propose two new schemes to extend the Jini lookup service: one is called inter-Federation Communication;and the other is called Proxy-Object Forwarding. In the first scheme, we construct an extended lookup service in charge of the Inter-federation service lookup. In the second one, we predict the federations that mobile clients will move to, and forward the requested proxy-objects to the predicted federations. With the effort of this paper, the performance of the Jini system is enhanced. Our experiments show the significant improvement in response time with Inter-Federation Communication and Proxy-Object Forwarding. © 2003 IEEE.

关键词： Multicasting

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Inter-cluster service lookup based on Jini

Inter-cluster service lookup based on Jini

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International Conference on Advanced information Networking and Applications (AINA)

作者： Wen-Hsien Tseng Hsing Mei Web Computing Laboratory Computer Science and Information Engineering Department Fu Jen Catholic University Taiwan

ISBN: (纸本)0769519067

Jinis discovery protocols allow people to access requested services spontaneously in their own federations. However, to access services in remote federations, people have to know where the remote lookup services of them are located. This prerequisite is owing to Jinis discovery protocols relying on multicasting support, which becomes an issue when people want to access services across non-multicastable federations. Jini system, moreover, cannot handle the mobility. When mobile clients join into a new federation, they have to relocate services, which were installed in the initiating federations. All these problems are consequent on lack of communication between federations in the current Jini system. We propose two new schemes to extend the Jini lookup service: one is called inter-Federation Communication; and the other is called Proxy-Object Forwarding. In the first scheme, we construct an extended lookup service in charge of the Inter-federation service lookup. In the second one, we predict the federations that mobile clients will move to, and forward the requested proxy-objects to the predicted federations. With the effort of this paper, the performance of the Jini system is enhanced. Our experiments show the significant improvement in response time with Inter-Federation Communication and Proxy-Object Forwarding.

关键词： Mobile communication Sun computer science Multicast protocols Access protocols Delay Personal digital assistants computer networks Terminology Bandwidth

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A content-based approach to searching and indexing spatial configurations 1

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2nd International Conference on Geographic information Science, GIScience 2002

作者： Rodríguez, M. Andrea Godoy, Francisco A. Department of Information Engineering and Computer Science University of Concepción Chile Center for Web Research University of Chile Edmundo Larenas 215 Concepción Chile

ISBN: (数字)9783540457992

ISBN: (纸本)9783540442530

A constant challenge of current spatial information systems is the retrieval of spatial configurations. This paper describes a new approach to retrieving spatial information whose novelty lies in using a content measure of topological relations to search and index spatial configurations. This approach uses a tree-based schema to index relations between objects’ minimum bounding rectangles, it preprocesses the user query to obtain an ordered list of spatial constraints, and it explores three searching algorithms that work over an indexed domain: fully-restrictive forward checking, partially-restrictive forward checking, and permutation-based searching. Experimental results show the viability of this type of indexing schema as well as the differences among searching algorithms. © Springer-Verlag Berlin Heidelberg 2002.

关键词： Search engines

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An automatic cache cooperative environment using ICP

An automatic cache cooperative environment using ICP

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International Conference on information Technology: Coding and Computing (ITCC)

作者： Hsing Mei Chun-Yu Lu Chi-Chen Lai Web Computing Laboratory Computer Science and Information Engineering Department Fu Jen Catholic University Taiwan

ISBN: (纸本)0769515061

Internet Cache Protocol (ICP) is useful for constructing a cooperative cache environment on the Internet. The proxy servers exchange ICP queries and replies in order to share the cached objects with others. However, the required bandwidth of the ICP procedure in the cooperative environment is fixed no matter how high or low the ICP hit rate is. We propose a querying filter mechanism to select proper ICP queries before sending them out. With the querying filter scheme, every proxy server builds a status table to store favorite web hosts of its neighbors. When the original hosts are requesting, those objects will be delivered freely in order to keep the ICP hit rate stable. Other queries have to be filtered for decreasing additional traffic cost. By doing so the unqualified queries will be filtered and the network bandwidth can be saved; this eventually raises the utilization of the ICP mechanism.

关键词： Cache memory Internet Bandwidth information filtering information filters Protocols Cooperative caching web server Telecommunication traffic Costs

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Performance enhancement of web-based push transmitter with channel scheduling

Performance enhancement of Web-based push transmitter with c...

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IEEE Annual International computer Software and Applications Conference (COMPSAC)

作者： Hsing Mei Chia-Hsi Chang Wen-Hsien Tseng Web Computing Laboratory Computer Science and Information Engineering Department Fu Jen Catholic University Taipei Taiwan

Push provides the automated and personalized web information delivery. Users can subscribe their interested channels from content providers. These channels will be delivered to users automatically in each update. Among all the components involved in a push system, a transmitter manages the deployment and maintenance of information channels. A content based channel scheduling mechanism for transmitters is designed and evaluated. Instead of push information by arriving order, the transmitter takes three more factors into account, i.e. the channel update period, the size of content, and the waiting time of content in queue. The transmitter delivers channels by their calculated priorities. Studying the results from our XML based simulation system, the new channel scheduling algorithm not only improves the average response time, but also decreases the average loss rate.

关键词： Transmitters Scheduling algorithm Network servers Software maintenance Processor scheduling Algorithm design and analysis Remote monitoring Laboratories computer science Publishing

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Hybrid prefetching for WWW proxy servers

Hybrid prefetching for WWW proxy servers

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International Conference on Parallel and Distributed Systems (ICPADS)

作者： Yui-Wen Horng Wen-Jou Lin Hsing Mei Web Computing Laboratory Department of Computer Science and Information Engineering Fu Jen Catholic University Taiwan

ISBN: (纸本)0818686030

As the application of the World Wide web grows, technologies for reducing web latency are becoming important. Proxy caching is one of the most effective and widely implemented mechanisms. By prefetching documents on the proxy server, a better cache hit rate can be achieved and the clients experience a faster response time. In this thesis, we propose a hybrid prefetching technique, combined with different constraints, which could increase cache hit rate. Under this new prefetching scheme, the additional traffic is controllable. We also show that, when prefetching techniques are used in the proxy server, separated cache management is better if the whole cache size is small. All of the mechanisms are experimented by trace driven simulation.

关键词： Prefetching World Wide web web server Delay Bandwidth web sites Traffic control Internet File systems Network servers

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Advances in Multimedia Modeling 1

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丛书名： Lecture Notes in computer Science

1000年

作者： Shipeng Li Tao Mei Abdulmotaleb Saddik Meng Wang Richang Hong Nicu Sebe Shuicheng Yan Cathal Gurrin

ISBN: (数字)9783642357282

ISBN: (纸本)9783642357275

The two-volume set LNCS 7732 and 7733 constitutes the thoroughly refereed proceedings of the 19th International Conference on Multimedia Modeling, MMM 2012, held in Huangshan, China, in January 2013.;The 30 revised regular papers, 46 special session papers, 20 poster session papers, and 15 demo session papers, and 6 video browser showdown were carefully reviewed and selected from numeroues submissions. The two volumes contain papers presented in the topical sections on multimedia annotation I and II, interactive and mobile multimedia, classification, recognition and tracking I and II, ranking in search, multimedia representation, multimedia systems, poster papers, special session papers, demo session papers, and video browser showdown.

关键词： Multimedia information Systems information Storage and Retrieval information Systems Applications (incl. Internet) Image Processing and computer Vision Pattern Recognition Data Mining and Knowledge Discovery

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GeoSpatial Semantics 1

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丛书名： Lecture Notes in computer Science

1000年

作者： M. Andrea Rodríguez Isabel Cruz Sergei Levashkin Max J. Egenhofer

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Advances in Multimedia Modeling 1

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丛书名： Lecture Notes in computer Science

1000年

作者： Shipeng Li Tao Mei Abdulmotaleb Saddik Meng Wang Richang Hong Nicu Sebe Shuicheng Yan Cathal Gurrin

ISBN: (数字)9783642357251

ISBN: (纸本)9783642357244

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