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检索条件"机构=Key Laboratories of Data Engineering and Knowledge Engineering"
1122 条 记 录,以下是1101-1110 订阅
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Adaptive load shedding for data stream using PI feedback controller
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Journal of Computational Information Systems 2007年 第5期3卷 1827-1832页
作者: Huang, Chongzheng Cai, Shaojiang Xie, Zhijun Zhang, Yuanyu Chen, Hong School of Information Renmin University of China Beijing 100872 China Key Laboratory of Data Engineering and Knowledge Engineering China School of Electronics and Information Engineering Xi'an Jiaotong University Xi'an 710000 China
Load shedding has been widely used in data stream management systems (DSMSs) to keep DSMSs running steadily. One key problem in load shedding is determining how much system load to shed. Existing works tend to adapt c... 详细信息
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Minimizing XML Queries Using a Family of Constraints
Minimizing XML Queries Using a Family of Constraints
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International Conference on Fuzzy Systems and knowledge Discovery (FSKD)
作者: Xiping Liu Changxuan Wan School of Information Technology Jiangxi Key Laboratory of Data and Knowledge Engineering Jiangxi University of Finance and Economics Nanchang China
An effective way to optimize XML queries is to minimize XML queries. In this paper, we improve redundance elimination in XPath queries greatly by incorporating two novel kinds of constraints: parent constraint and sib... 详细信息
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The Rewriting Algorithm for Disjunctive Queries between Peer Ontologies
The Rewriting Algorithm for Disjunctive Queries between Peer...
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2007年第三届语义和知识网格国际会议(Third International Conference on Semantics,knowledge,and Grid)(SKG 2007)
作者: Biao Qin Shan Wang Dept. of Computer Science Renmin University of China Beijing 100872 China Key Laboratory of Data Engineering and Knowledge Engineering Ministry of EducationBeijing 100872 China
We study the problem of answering queries given a set of mappings between peer ontologies. In addition to the schema mapping between peer ontologies, there are axioms to give constraints to classes and properties. We ... 详细信息
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Measuring Semantic Associaiton in Domain Ontology
Measuring Semantic Associaiton in Domain Ontology
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International Conference on Semantics, knowledge and Grid (SKG)
作者: Xuan Tian Haihua Li Xiaoyong Du School of Information Renmin University of China Beijing China Key Laboratory of Data Engineering and Knowledge Engineering MOESchool of Information Renmin University of China Beijing China
In domain ontology, semantic association (SA) is used to depict the correlation between two concepts. In this paper, we define semantic association degree (SAD) for measuring SA in the domain ontology. We first presen... 详细信息
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Finding Top-k Min-Cost Connected Trees in databases
Finding Top-k Min-Cost Connected Trees in Databases
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International Conference on data engineering
作者: Bolin Ding Jeffrey Xu Yu Shan Wang Lu Qin Xiao Zhang Xuemin Lin Chinese University of Hong Kong China Key Laboratory of Data Engineering and Knowledge Engineering MOE of China Renmin University of China China University of New South Wales Australia
It is widely realized that the integration of database and information retrieval techniques will provide users with a wide range of high quality services. In this paper, we study processing an l-keyword query, p 1 , p... 详细信息
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Milling of multi-relational association rules
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Ruan Jian Xue Bao/Journal of Software 2007年 第11期18卷 2752-2765页
作者: He, Jun Liu, Hong-Yan Du, Xiao-Yong Department of Computer Science and Technology Renmin University of China Beijing 100872 China Department of Management Science and Engineering Tsinghua University Beijing 100084 China Key Laboratory of Data Engineering and Knowledge Engineering Beijing 100872 China
Association rule mining is one of the most important and basic technique in data mining, which has been studied extensively and has a wide range of applications. However, as traditional data mining algorithms usually ... 详细信息
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Preface
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计算机科学技术学报(英文版) 2007年 第2期22卷 插1-插2页
作者: Shan Wang Jian-Zhong Li Scholl of Information Key Lab Data Engineering and Knowledge EngineeringRenmin University of China Department of Computer Science and Technology Harbin Institute of Technology
Recent advances in database related applications propose many new challenges and have inspired database researchers and practitioners to further make their efforts on new database technologies.
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database Research: Achievements and Challenges
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Journal of Computer Science & Technology 2006年 第5期21卷 823-837页
作者: 王珊 杜小勇 孟小峰 陈红 School of Information Renmin University of China MOE Key Lab of Data Engineering and Knowledge Engineering Beijing 100872 P.R. China
database system is the infrastructure of the modern information system. The R&D in the database system and its technologies is one of the important research topics in the field. The database R&D in China took off la... 详细信息
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2DCMA: An Effective Maintenance Algorithm of Materialized Views in Peer data Management Systems
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Journal of Computer Science & Technology 2006年 第4期21卷 503-512页
作者: 覃飙 王珊 杜小勇 School of Information Renmin University of China Beijing 100872 P.R. China Key Laboratory of Data Engineering and Knowledge Engineering Ministry of Education Beijing 100872 P.R. China
Update management is very important for data integration systems. So update management in peer data management systems (PDMSs) is a hot research area. This paper researches on view maintenance in PDMSs. First, the d... 详细信息
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Maintaining materialized relations incrementally to improve performance of ontology query
Maintaining materialized relations incrementally to improve ...
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7th International Conference on Web-Age Information Management Workshops, WAIM 2006
作者: Li, Man Du, Xiaoyong Wang, Shan School of Information Renmin University of China China Key Laboratory of Data Engineering and Knowledge Engineering MOE 100872 Beijing China
For ontology-based applications, the efficiency of ontology query is vital. Different from existing approaches, the paper improves performance of ontology query by materializing some derived relations. Experimental re... 详细信息
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