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32nd International Conference on Very Large data Bases, VLDB 2006

作者： Wang, Shan Peng, Zhaohui Zhang, Jun Qin, Lu Wang, Sheng Yu, Jeffrey Xu Ding, Bolin School of Information Renmin Univ. of China Key Laboratory of Data Engineering and Knowledge Engineering MOE of China Beijing China Department of Systems Engineering and Engineering Management The Chinese Univ. of Hong Kong Hong Kong Hong Kong

ISBN: (纸本)1595933859

The integration of database and information retrieval techniques provides users with a wide range of high quality services. We present a prototype system, called NUITS, for efficiently processing keyword queries on top of a relational database. Our NUITS allows users to issue simple keyword queries as well as advanced keyword queries with conditions. The efficiency of keyword query processing and the user-friendly result display will also be addressed in this paper. Copyright 2006 VLDB Endowment, ACM

关键词： Query processing

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A framework for specification and performance evaluation of service discovery protocols in mobile ad-hoc networks

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Ad Hoc Networks 2006年第1期4卷 1-23页

作者： Shenoi, Avinash Yesha, Yelena Yesha, Yaacov Joshi, Anupam Department of Computer Science and Electrical Engineering University of Maryland Baltimore County 1000 Hilltop Circle Baltimore MD 21250 United States Ebiquity Research Group Department of Computer Science and Electrical Engineering University of Maryland Baltimore County IEEE Transaction on Knowledge and Data Engineering IEEE ACM UMBC IEEE Transactions of Fuzzy Systems IEEE IEEE-CS ACM

Service discovery protocols are extremely important for developing distributed applications in ad-hoc environments. However to perform Service Discovery in mobile ad-hoc networks requires the design and development of extremely complex and dynamic systems. This requires a paradigm shift in the methodologies employed to design and evaluate these systems so as to ensure quality and correctness. Currently there exists no generic method for formally specifying these systems. Due to this it is extremely difficult to formally analyze protocols in this domain to study and observe the behavior. The same issue also hinders comparison of different protocols against a fixed set of metrics. In this work we propose a framework for the formal specification of service discovery protocols in mobile ad-hoc networks. The purpose of this framework is to provide a formal basis for performance evaluation and behavioral study of these protocols. This allows different service discovery architectures to be evaluated against a given set of metrics, a generic way to specify protocols and an automated process for performance evaluation and behavioral study. © 2004 Elsevier B.V. All rights reserved.

关键词： Network protocols

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An ontology-based architecture for tracking information across interactive electronic environments

An ontology-based architecture for tracking information acro...

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39th Annual Hawaii International Conference on System Sciences, HICSS'06

作者： Scharl, Arno Weichselbraun, Albert Liu, Wei Know-Center Institute of Knowledge Management Graz University of Technology Department of Information Systems and Operations Vienna University of Economics and Business Administration School of Computer Science and Software Engineering University of Western Australia

ISBN: (纸本)0769525075

This paper presents technical foundation, roadmap and initial results of the IDIOM project (information Diffusion across Interactive Online Media). information spreads rapidly across Web sites, Web logs and online forums. IDIOM tracks this process and compares it to direct communication through electronic mail and instant messaging. Linguists define "idiom" as an expression whose meaning is different from the literal meanings of its component words. Similarly, the study of information diffusion promises insights that cannot be inferred from individual network elements. Similar projects often focus on particular media, or neglect important aspects of the human language. IDIOM addresses these gaps to reveal fundamental mechanisms of information diffusion across media with distinct interactive characteristics. © 2006 IEEE.

关键词： Electronic equipment

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Utilizing search intent in topic ontology-based user profile for Web mining 06

Utilizing search intent in topic ontology-based user profile...

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2006 IEEE/WIC/ACM International Conference on Web Intelligence, WI'06

作者： Zhou, Xujuan Wu, Sheng-Tang Li, Yuefeng Xu, Yue Lau, Raymond Y.K. Bruza, Peter D. School of Software Engineering and Data Communications Queensland University of Technology QLD 4000 Australia Department of Information Systems City University of Hong Kong Tat Chee Avenue Kowloon Hong Kong

ISBN: (纸本)0769527477

It is well known that taking the Web user profiles into account can enhance the effectiveness of Web mining systems. However, due to the dynamic and complex nature of Web users, automatically acquiring worthwhile user profiles was found to be very challenging. Ontologybased user profile can possess more accurate user information. This research emphasizes on acquiring search intentions information. This paper presents a new approach of developing user profile for Web searching. The model considers the user's search intentions by the process of PTM (Pattern-Taxonomy Model). Initial experiments show that the user profile based on search intention is more useful than the generic PTM user profile. Developing user profile that contains user search intentions is essential for effective Web search and retrieval. © 2006 IEEE.

关键词： Web services

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knowledge acquisition about the deletion possibility of adnominal verb phrases

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systems and Computers in Japan 2006年第2期37卷 25-36页

作者： Sakai, Hiroyuki Masuyama, Shigeru Department of Knowledge-Based Information Engineering Toyohashi University of Technology Toyohashi 441-8580 Japan Department of Knowledge-Based Information Engineering Toyohashi University of Technology OR Society of Japan Information Processing Society of Japan Institute of Systems Control and Information Engineers of Japan Association for Natural Language Processing of Japan

We propose a method of acquiring knowledge about the possibility of deletion of adnominal verb phrases from a corpus. Our method acquires such items as the frequency of modification of the noun by adnominal verb phrases and the variety of adnominal verb phrases modifying the noun, from a newspaper corpus, and yields knowledge about the possibility of deletion of adnominal verb phrases by using their statistical information. Our method also identifies adnominal verb phrases modifying nouns with important content as deletable ones. Experimental results show that the precision and the recall attained 77.3% and 69.4%, respectively. © 2006 Wiley Periodicals, Inc.

关键词： knowledge acquisition

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NUITS: a novel user interface for efficient keyword search over databases 06

NUITS: a novel user interface for efficient keyword search o...

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Proceedings of the 32nd international conference on Very large data bases

作者： Shan Wang Zhaohui Peng Jun Zhang Lu Qin Sheng Wang Jeffrey Xu Yu Bolin Ding School of Information Renmin Univ. of China Key Laboratory of Data Engineering and Knowledge Engineering MOE of China Beijing China Department of Systems Engineering and Engineering Management The Chinese Univ. of Hong Kong Hong Kong China

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Mining Maximal Frequent Patterns in a Unidirectional FP-tree

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Journal of Donghua University(English Edition) 2006年第6期000卷 105-109页

作者： SONG Jing-jing LIU Rui-xin WANG Yan JIANG Bao-qing SONG Jing-jing(Institute of Data and Knowledge Engineering Henan University Kaifeng 475001) LIU Rui-xin(Information Engineering Science Department Yellow River Conservancy Technical Institute Kaifeng 475003) WANG Yan(Institute of Data and Knowledge Engineering Henan University Kaifeng 475001 Department of Computer Science and Application Zhengzhou Institute of Aeronautical Industry Management Zhengzhou 450015)

Becausemining complete set of frequent patterns from dense database could be impractical, an interesting alternative has been proposed recently. Instead of mining the complete set of frequent patterns, the new model only finds out the maximal frequent patterns, which can generate all frequent patterns. FP-growth algorithm is one of the most efficient frequent-pattern mining methods published so far. However,because FP-tree and conditional FP-trees must be two-way traversable, a great deal memory is needed in process of mining. This paper proposes an efficient algorithm Unid_FP-Max for mining maximal frequent patterns based on unidirectional FP-tree. Because of generation method of unidirectional FP-tree and conditional unidirectional FP-trees, the algorithm reduces the space consumption to the fullest extent. With the development of two techniques:single path pruning and header table pruning which can cut down many conditional unidirectional FP-trees generated recursively in mining process, Unid_ FP-Max further lowers the expense of time and space.

关键词： data mining frequent pattern the maximal frequent pattern Unid _ FP-tree conditional Unid _ FP-tree

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Process Artifacts Defined as an Aspectual Service to System Models

Process Artifacts Defined as an Aspectual Service to System ...

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Service-Oriented Computing: Consequences for engineering Requirements, SOCCER

作者： Robin A. Gandhi Siddharth J. Wagle Seok-won Lee Knowledge-intensive Software Engineering Research Group Department of Software and Information Systems University of North Carolina Charlotte Charlotte NC USA

Process artifacts identified from a process description often implicitly bias and cross-cut the definition of generic services from various tools that assist/automate process activities. The resulting toolsupport is tightly coupled with the process definition it supports, leading to poor adaptability when the required artifacts or process activities evolve/change. This issue is of further concern while providing toolsupport for assisting knowledge-intensive process activities through an interactive exploration of related knowledge-bases. Therefore, our focus is on early separation of process related cross-cutting concerns from generic tool-support services for creating, browsing, accessing, querying, inferencing, and visualizing associated knowledge-bases. We discuss our approach in the context of designing tool support for a system security Certification and Accreditation (C&A) process automation based on service-oriented and aspect-oriented design paradigms.

关键词： Ontologies Software systems Software tools information systems Visualization Context-aware services Security Certification Accreditation Automation

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Utilizing Search Intent in Topic Ontology-Based User Profile for Web Mining

Utilizing Search Intent in Topic Ontology-Based User Profile...

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IEEE WIC ACM International Conference on Web Intelligence (WI)

作者： Xujuan Zhou Sheng-tang Wu Yuefeng Li Yue Xu Raymond Y.k. Lau Peter D. Bruza School of Software Engineering and Data Communications Queensland University of Technology QLD Australia Department of Information Systems City University of Hong Kong Hong Kong China

It is well known that taking the Web user profiles into account can enhance the effectiveness of Web mining systems. However, due to the dynamic and complex nature of Web users, automatically acquiring worthwhile user profiles was found to be very challenging. Ontology-based user profile can possess more accurate user information. This research emphasizes on acquiring search intentions information. This paper presents a new approach of developing user profile for Web searching. The model considers the user's search intentions by the process of PTM (Pattern-Taxonomy Model). Initial experiments show that the user profile based on search intention is more useful than the generic PTM user profile. Developing user profile that contains user search intentions is essential for effective Web search and retrieval

关键词： Ontologies Web mining Search engines data mining Web search information retrieval Software engineering data communication information systems Hardware

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Online Detection and Classification of Disasters by a Multiple-input/single-output Sensor for a Home Security System

Online Detection and Classification of Disasters by a Multip...

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International Joint Conference on Neural Networks (IJCNN)

作者： T. Ishigaki T. Higuchi K. Watanabe Department of Statistical Science The Graduate University for Advanced Studies (SOKENDAI) Tokyo Japan System Control Engineering Department Hoxi University Tokyo Japan Prediction and Knowledge Discovery Research Center Research Organization of Information and Systems Tokyo Japan System Control Engineering Department Hosei University Tokyo Japan

Conventional sensors have been designed to minimize noise effects. Any sensor that is designed to detect a certain physical variable is influenced to a certain degree by other physical variables. This suggests that any sensor is potentially tap able of detecting multiple physical variables. In the present study, we consider sensing devices that are easily influenced by several physical variables and make full use of their multi-sensing characteristics through statistical signal processing and machine learning techniques with a wide variety of prior information. The proposed sensor design approach is completely different from the conventional approach with respect to system design and has advantages in terms of cost and system simplification compared to existing approaches. This new idea can be realized by developing a novel multiple-input/single-output sensor that can detect various variables such as pressure, acceleration, temperature and light emission by a single device. The sensor is applied to monitor the symptoms of tire, earthquake and break-in for the purpose of home security. The proposed security system consists of the following three steps: (1) detection of disaster by a probabilistic outlier detection procedure using an auto-regressive model, (2) disaster feature extraction by Kalman filter on a state space model, and (3) disaster classification by multiclass support vector machine.

关键词： Sensor systems Security Sensor phenomena and characterization Temperature sensors Signal processing Machine learning Costs Acceleration Monitoring Tires

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