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检索条件"任意字段=Joint International Conference on Advances in Data and Web Management, APWeb/WAIM 2009"

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Generation and matching of ontology data for the semantic web in a peer-to-peer framework

Generation and matching of ontology data for the semantic we...

引用

9th Asia-Pacific web conference/8th international conference on web-Age Information management (apweb/waim 2007)

作者： Wang, Chao Lu, Jie Zhang, Guangquan Univ Technol Sydney Fac Informat Technol POB 123 Broadway NSW 2007 Australia

ISBN: (纸本)9783540724834

The abundance of ontology data is very crucial to the emerging semantic web. This paper proposes a framework that supports the generation of ontology data in a peer-to-peer environment. It not only enables users to convert existing structured data to ontology data aligned with given ontology schemas, but also allows them to publish new ontology data with ease. Besides ontology data generation, the common issue of data overlapping over the peers is addressed by the process of ontology data matching in the framework. This process helps turn the implicitly related data among the peers caused by overlapping into explicitly interlinked ontology data, which increases the overall quality of the ontology data. To improve matching accuracy, we explore ontology related features in the matching process. Experiments show that adding these features achieves better overall performance than using traditional features only.

关键词： Distributed computer systems

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A Comparative Study of Replica Placement Strategies in data Grids

引用

9th Asia-Pacific web conference/8th international conference on web-Age Information management (apweb/waim 2007)

作者： Rasool, Qaisar Li, Jianzhong Oreku, George S. Munir, Ehsan Ullah Yang, Donghua Harbin Inst Technol Sch Comp Sci & Technol Harbin Peoples R China

ISBN: (纸本)9783540729082

data Grids are today's emerging infrastructure providing specialized services on handling large datasets that needs to be transferred and replicated among different grid sites. data replication is an important technique for data availability and fast access. In this paper we present a comparison of various replication models and techniques employed by some major topologies used in data grid environment. We focus on dynamic strategies For replica placement in tree, Peer-to-Peer (P2P) and hybrid architectures. Beside tree model which is being implemented for many data Grid applications, hybrid and P2P grid models of replication are also emerging for providing scientific communities with better availability and efficient access to massive data.

关键词： Grid computing

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Discovering web services based on probabilistic latent factor model

Discovering Web services based on probabilistic latent facto...

引用

9th Asia-Pacific web conference/8th international conference on web-Age Information management (apweb/waim 2007)

作者： Zhang, Yanchun Ma, Jiangang Univ Victoria Sch Comp Sci & Math Victoria BC V8W 2Y2 Canada

ISBN: (纸本)9783540724834

Recently, web services have been increasingly used to integrate and build business applications on the Internet. Once a web service is published and deployed, clients and other applications can discover and invoke it. With the incredibly increasing number of web services on the Internet, it is critical for service users to discover desired services that match their requirements. In this paper, we present a novel approach for discovering web services. Based on the current dominating mechanisms of the discovering and describing web services with UDDI and WSDL, the proposed method utilizes Probabilistic Latent Semantic Analysis (PLSA) to capture semantic concepts hidden behind words in a query and the advertisements in services so that services matching is expected to be carried out at concept level. We also present related algorithms and preliminary experiments to evaluate the effectiveness of our approach.

关键词： web services web services discovering

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Efficient incremental computation of CUBE in multiple versions what-if analysis

Efficient incremental computation of CUBE in multiple versio...

引用

joint international conference on advances in data and web management, apweb/waim 2009

作者： Xiao, Yanqin Zhang, Yansong Wang, Shan Chen, Hong Key Laboratory of Data Engineering and Knowledge Engineering Renmin University of China MOE Beijing 100872 China School of Information Renmin University of China Beijing 100872 China Computer Center Hebei University Baoding Hebei 071002 China Department of Computer Science Harbin Finance College Harbin 150030 China

ISBN: (纸本)9783642006715

What-if analysis is an important method to analyze the hypothetical scenarios based on the historical data. It provides useful information for the decision- maker. Multiple versions are critical to what-if analysis. In this paper, we analyze the problem of multiple versions data processing and the incremental computation of cubes in what-if analysis, proposing a strategy to process multiple versions of what-if data. Our solution can adopt different data processing methods according to the type of aggregate functions, the efficiency of multiple versions data processing is improved. Furthermore, we proposes an algorithm of incremental computation of CUBE for max(min) function to reduce the access time of fact table, and the experimental results showed that the performance is improved about 10%. © Springer-Verlag Berlin Heidelberg 2009.

关键词： Decision making

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Promotional ranking of search engine results: Giving new web pages a chance to prove their values

Promotional ranking of search engine results: Giving new web...

引用

9th Asia-Pacific web conference/8th international conference on web-Age Information management (apweb/waim 2007)

作者： Zhu, Yizhen Wu, Mingda Zhang, Yan Li, Xiaoming Peking Univ Natl Lab Machine Precept Beijing 100871 Peoples R China Peking Univ Dept Comp Sci & Technol Beijing 100871 Peoples R China

ISBN: (纸本)9783540724834

Recent studies show that the link-structure-based measures of web page popularity prolong the procedure of new pages reaching their deserved ranking. In this paper we propose a promotional ranking scheme that offers an opportunity for newly-created pages to be recognized. We conduct a simulation to evaluate our method. Experimental results show that our method remarkably raises the probability for new pages to obtain user-awareness.

关键词： Search engines

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HiBO: Mining web's favorites

HiBO: Mining web's favorites

引用

9th Asia-Pacific web conference/8th international conference on web-Age Information management (apweb/waim 2007)

作者： Stamou, Sofia Kozanidis, Lefteris Tzekou, Paraskevi Zotos, Nikos Cristodoulakis, Dimitris Univ Patras Comp Engn & Informat Dept Patras 26500 Greece

ISBN: (纸本)9783540724834

HiBO is a bookmark management system that incorporates a number of web mining techniques and offers new ways to search, browse, organize and share web data. One of the most challenging features that HiBO incorporates is the automated hierarchical structuring of bookmarks that are shared across users. One way to go about organizing shared files is to use one of the existing collaborative filtering techniques, identify the common patterns in the user preferences and organize bookmarked files accordingly. However, collaborative filtering suffers from some intrinsic limitations, the most critical of which is the complexity of the collaborative filleting algorithms that inevitably leads to the latency in updating the user profiles. In this paper, we address the dynamic maintenance of personalized views to shared files from a bookmark management system perspective and we study ways of assisting web users share their information space with the community. To evaluate the contribution of HiBO, we applied our web mining techniques to manage a large pool of bookmarked pages that are shared across community members. Results demonstrate that HiBO has a significant potential in assisting users organize and manage their shared data across web-based social networks.

关键词： hierarchical structures web data management bookmarks system architecture personalization

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Real-Time Creation Method of Personalized Mobile web Contents for Ubiquitous Contents Access

引用

9th Asia-Pacific web conference/8th international conference on web-Age Information management (apweb/waim 2007)

作者： Han, SeungHyun Ryu, DongYeop Lim, YoungHwan Soongsil Univ Sch Comp 1-1 Sangdo 5 Dong Seoul 156743 South Korea Soongsil Univ Sch Media Seoul 156743 South Korea

ISBN: (纸本)9783540729082

Although wireless devices are the most Suitable device for ubiquitous environment, they have restrictive capacities when using internet services than desktop environments. Therefore this research proposes a wireless internet service method that uses contents-based personalization. The existing websites can easily and promptly access desired news articles and other data through RSS-linked web contents and by the personalization method. The proposed method will make using Wireless internet easier while lowering wireless contents production Costs. Moreover, personalized mobile web contents that satisfy the preferences of users can be serviced.

关键词： Contents Mobile Personalization Ubiquitous Transcoding

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The Golden Mean Operator Scheduling Strategy in data Stream Systems

引用

9th Asia-Pacific web conference/8th international conference on web-Age Information management (apweb/waim 2007)

作者： Deng, Huafeng Liu, Yunsheng Xiao, Yingyuan Huazhong Univ Sci & Technol Sch Comp Sci & Technol Wuhan 430074 Hubei Peoples R China

ISBN: (纸本)9783540729082

A scheduling strategy, called Golden Mean (GM), is designed to achieve the dynamic balance between the memory usage minimization and latency minimization by taking the status of the future workload, the current memory consumption and QoS requirement;of the query into account. In the scheduling strategy, the executing order of the operators is decided uniformly according to the Scoring Function. The static parameters in the Scoring Function can be customized to meet the need of various application scenarios, while the dynamical parameters adjusted automatically according to the current system status. In addition, the priority levels of queries can be guaranteed by GMl. The experimental results indicate that, the GM scheduling strategy is very effective in practice.

关键词： Scheduling algorithms

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Intervention events detection and prediction in data streams

Intervention events detection and prediction in data streams

引用

joint international conference on advances in data and web management, apweb/waim 2009

作者： Wang, Yue Tang, Changjie Li, Chuan Chen, Yu Yang, Ning Tang, Rong Zhu, Jun The Database and knowledge Engineering Lab Computer School of Sichuan University China China Birth Defect Monitoring Centre Sichuan University China

ISBN: (纸本)9783642006715

Mining interesting patterns in data streams has attracted special attention recently. This study revealed the principles behind observations, through variation of intervention events to analyze the trends in the data streams. The main contributions includes: (a) Proposed a novel concept intervention event, and method to analyze streams under intervention. (b) Proposed the methods to evaluate the impact of intervention events. (c) Gave extensive experiments on real data to show that the newly proposed methods do prediction efficiently, and the rate of success is almost reach 92.6% recall in adaptive detection for intervention events in practical environment. © Springer-Verlag Berlin Heidelberg 2009.

关键词： Forecasting

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Design and Implementation of a System for Environmental Monitoring Sensor Network

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9th Asia-Pacific web conference/8th international conference on web-Age Information management (apweb/waim 2007)

作者： Lee, Yang Koo Jung, Young Jin Ryu, Keun Ho Chungbuk Natl Univ Database Bioinformat Lab Cheongju South Korea

ISBN: (纸本)9783540729082

In this paper, we propose a system architecture for handling and storing sensor data stream in real-time to support the spatial and/or temporal queries besides continuous queries. We exploit a segment-based method to store the sensor data stream and reduce the managed tuples without any loss Of information, which lead to the improvement of the accuracy of query results. In addition, we offer a method to reduce the cost of join operations in processing spatiotemporal queries by filtering out the list of irrelevant sensors from the query range before making the join operation. We then present a design of the system architecture for processing spatial and/or temporal queries. Finally, we implement a climate monitoring application system.

关键词： Wireless Sensor Network Sensor data Stream Spatiotemporal data Stream Continuous Query Historical Query

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