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检索条件"机构=Key Laboratories of Data Engineering and Knowledge Engineering"
1111 条 记 录,以下是1091-1100 订阅
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An approximate sequential pattern mining approach over data stream based on Levenshtein-Automata
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Journal of Computational Information Systems 2007年 第5期3卷 2025-2030页
作者: Li, Haifeng Chen, Hong School of Information Renmin University of China Beijing 100872 China Key Laboratory of Data Engineering and Knowledge Engineering China
Sequential pattern mining is an important method in data mining. Traditional mining algorithms are not adapted to the fast, unlimited, continuous and dynamic data stream because they are multiple pass in scanning data... 详细信息
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Energy-efficient approximate skyline computation in sensor networks
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Journal of Computational Information Systems 2007年 第5期3卷 1821-1826页
作者: Xie, Tingting Lai, Yongxuan Chen, Hong School of Information Renmin University of China Beijing 100872 China Key Laboratory of Data Engineering and Knowledge Engineering China
The skyline query is frequently used to find a set of dominating data points (called skyline points) in a multidimensional dataset It is one of the most important query methods for database, datastream, P2P networks. ... 详细信息
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Computing Degree of Association Based on Different Semantic Relationships
Computing Degree of Association Based on Different Semantic ...
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International Workshop on database and Expert Systems Applications
作者: Xuan Tian Xiaoyong Du Haihua Li School of Information Key Laboratory of Data Engineering and Knowledge Engineering MOE Renmin University of China Beijing China
In domain ontologies, there is usually no weight assigned to the link between two concepts. This has been considered as one of main obstacles in using ontologies. Semantic Association (SA) is to depict the correlation... 详细信息
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Modeling User_s Cognitive Structure in Contextual Information Retrieval
Modeling User_s Cognitive Structure in Contextual Informatio...
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International Conference on Fuzzy Systems and knowledge Discovery (FSKD)
作者: Xuan Tian Xiaoyong Du He Hu Haihua Li School of Information Key Laboratory of Data Engineering and Knowledge Engineering MOE Renmin University of China Beijing China
In contextual information retrieval, the retrieval of information depends on the time and place of submitting query, history of interaction, task in hand, and many other factors that are not given explicitly but impli... 详细信息
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The Approximation Operators Within Formal Contexts
The Approximation Operators Within Formal Contexts
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International Conference on Multimedia and Ubiquitous engineering (MUE)
作者: Ming-Wen Shao Jiangxi Key Laboratory of Data and Knowledge Engineering Jiangxi University of Finance and Economics Nanchang Jiangxi China
In this paper, based on concept lattices and dual concept lattices, we introduced a pair of rough set approximation operators within formal contexts. The proposed approximations operators don't require the equival... 详细信息
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Energy-efficient Robust data-centric Storage in Wireless Sensor Networks
Energy-efficient Robust Data-centric Storage in Wireless Sen...
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第三届IEEE无线通讯、网络技术暨移动计算国际会议
作者: Yongxuan Lai Yufeng Wang Hong Chen School of Information Renmin University of China Beijing P.R.China Key Laboratory of Data Engineering and Knowledge Engineering MOE
In this paper, we propose a new Dynamic datacentric Storage (DDS) mechanism in wireless sensor network. DDS, which is aware of the data distributions of the network, dynamically adjusts the mappings from sensor readin... 详细信息
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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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