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An efficient data mining technique for discovering interesting sequential patterns

作者： Yen, Show-Jane Lee, Yue-Shi Dept. of Computer Science and Information Engineering Fu Jen Catholic University Taipei Taiwan Dept. of Information Management Ming Chuan University Taipei Taiwan

ISBN: (纸本)0769511198

Mining sequential patterns is to discover sequential purchasing behaviors of most customers from a large amount of customer transactions. In this paper, a data mining language is presented. From the data mining language, users can specify the interested items and the criteria of the sequential patterns to be discovered. Also, an efficient data mining technique is proposed to extract the sequential patterns according to the users' requests. © 2001 IEEE.

关键词： Data mining

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A benchmark-based adaptable software process model

A benchmark-based adaptable software process model

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27th EUROMICRO Conference 2001: A Net Odyssey, EUROMICRO 2001

作者： Wang, Yingxu Leung, Hareton K. N. Dept. of Electrical and Computer Engineering University of Calgary 2500 University Drive NW Calgary AB T2N 1 N4 Canada Laboratory for Software Development and Management Dept. of Computing Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong

ISBN: (纸本)0769512364

Benchmark-based process assessment and improvement is a cutting-edge technology in software engineering for adaptive and relative process improvement. It is found that benchmark-based process improvement is more adaptable, feasible, and economical in process-based software engineering. By adopting the benchmark-based process improvement, the target capability levels of a software organization may be set related to the benchmarks of the software industry or a specific sector, rather than a virtual highest capability level according to a goal-oriented process model. The objective of this project is to develop a benchmark-based and organization and project size and features adaptable software process model (BBASPM). This report describes the architecture of the BBASPM model and its process and capability dimensions. BBASPM is developed by referring to the SEPRM model and benchmarks in process selection and target process capability determination. Adaptation guidelines of BBASPM to different sized organizations and projects are provided, especially for small organizations and small projects. BBASPM is developed as a superset of CMM, ISO 15504 and ISO 9001. Using the mapping mechanism provided in SEPRM, the BBASPM capability levels can be transformed into other process models and standards, such as CMM and ISO 15504. We also describe our experience in using BBASPM on a process improvement project. © 2001 IEEE.

关键词： Software engineering

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Object-oriented modeling for remote monitoring of manufacturing processes

Object-oriented modeling for remote monitoring of manufactur...

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International Conference on Emerging Technologies and Factory Automation (ETFA)

作者： M. Marcos I. Calvo D. Orive I. Sarachaga J.M. Fuertes P. Marti R. Villa S. Buzoianu Department of Automatic Control and Systems Engineering University of Basque Country (UPV-EHU) Bilbao Spain Dept. of Automatic Control and Systems Engineering University of the Basque Country Bilbao SPAIN Dept. of Automatic Control and Computer Engineering Technical University of Catalonia Barcelona SPAIN

ISBN: (纸本)0780372417

Deals with the use of object oriented technologies in the modeling of industrial plants that have to be remotely monitored and/or controlled. The main goal is to propose a design methodology for obtaining the model of the so-called Virtual Plant, that a remote and certified user will use to access the real plant for performing command actions and/or monitoring. The type of applications and systems targeted must have autonomous behavior and be interconnected and accessible. Reliability, maintainability and flexibility are also required goals, as well as a high rate of reusability of the applications. The methodology has been applied to the remote process monitoring and control of manufacturing processes. The Virtual Plant Model is, in fact, the part of the plant that can be accessed by a certified remote client and thus it can be constituted by a set of sub-models, as many as different types of clients. The Virtual Plant resides inside the Application Server who is responsible of communicating with the cell controller and sends the image of the actual plant state (the Virtual Plant) as required by the remote client (monitoring) or sends the client commands to the cell controller.

关键词： Object oriented modeling Remote monitoring Manufacturing processes Automatic control Internet Process control Systems engineering and theory Paper technology Industrial plants computerized monitoring

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Automated Open-Canal Water-Supply Systems

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IFAC Proceedings Volumes 2001年第3期34卷 189-194页

作者： Jovan D. Stefanovski Georgi M. Dimirovski HS Strezhevo Control & Informatics Div. 7000 Bitola R. Macedonia Dept. of Computer Engineering Faculty of Engineering Dogus University TR-81010 Kadikoy - Istanbul Turkey

This paper presents a feasible open-canal water-distribution control system based on the dynamic regulation principle and the theory of Kalman optimal controller. The existing nonlinear phenomena, as well as the transport delay phenomenon are accounted for. The obtained controller is simulated using the full Saint-Venant partial differential equations

关键词： computer simulation Kalman controller open-canal systems Saint-Venant equations

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On real-time control tasks schedulability 6

On real-time control tasks schedulability

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6th European control Conference, ECC 2001

作者： Marti, P. Villa, R. Fuertes, J.M. Fohle, G. Dep. of Automatic Control Universitat Politècnica de Catalunya Pau Gargallo 5 Barcelona08028 Spain Dept. of Computer Engineering Mälardalen Högskola PO Box 883 VästeråsSE-721 23 Sweden

ISBN: (纸本)9783952417362

In general, characteristics of classical control theory and properties of real-time scheduling algorithms may cause unexpected control system responses in the implementation of real-time computer-controlled systems. Revising realtime scheduling properties, we analyse which are the main timing problems that current scheduling algorithms may introduce in the execution of control loops. Next, we categorise those timing problems, that is, jitters on task-instances executions, in a control context. Afterwards, we show, by simulations, different types of control system performance degradation that these jitters may cause. Finally, we propose possible solutions that solves this degradation, based on irregular sampling discrete-time system models with varying time delays. © 2001 EUCA.

关键词： Real time control

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Hybrid leader-follower and fuzzy-Petri-net traffic rate control and supervision in network systems

Hybrid leader-follower and fuzzy-Petri-net traffic rate cont...

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5th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Service, TELSIKS 2001

作者： Dimirovski, G.M. Jing, Yuanwei Zhang, Siying Dept. of Computer Engineering Faculty of Engineeing DOGUS University Zeamet Sk. 21 TR-81010 Kadikoy-Istanbul Turkey Institute of Automation and Systems Engg. Faculty of Electical Engineering Methodius University MK-1000 Skopje Macedonia Institute of Control Theory School of Information Science and Engineering Northeastern University Shenyang Liaoning 110006 China

ISBN: (纸本)078037228X

This paper addresses networking and traffic control problems in network systems along with the potential for introducing soft-computing applications at supervisory control level. The incentive Stackelberg strategy control concept was introduced to the networking model that comprises subsidiary systems of users and of network. A linear strategy is proposed for the elastic traffic problem, and results are demonstrated and illustrated via Kelly's (1997) example. The presented method is extended to the non-elastic traffic problem and results are also illustrated via a slightly modified Kelly example. Ways of employing combined analytical and soft-computing approaches and techniques in a hybrid framework have been investigated. A fuzzy-Petri-net supervisor is proposed to implement the strategic decision and control layer. Insofar obtained results are rather encouraging, and this research continues further towards possible implementation as well as some open theoretical issues. © 2001 IEEE.

关键词： Game theory

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A Comparison of Optimal Iterative Learning control Schemes

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IFAC Proceedings Volumes 2001年第14期34卷 77-82页

作者： M. Rzewuski E. Rogers D.H. Owens Dept. of Electronics and Computer Science University of Southampton Southampton SO17 IBJ UK Department of Automatic Control and Systems Engineering University of Sheffield Sheffield S1 3JD UK

Recent years has seen much progress in the theory and application of iterative learning control schemes for both linear and (classes of) nonlinear dynamics. In the case of the former, many algorithms based on minimizing a suitable cost function have been reported. Here the interest is in the so-called norm optimal approach where the basic philosophy is to compute the control input on the current trial such that the tracking error is reduced in an optimal way without too much deviation from the control input used on the previous trial. This paper compares the performance of a range of controllers arising from use of the norm optimal approach - both stand alone and against alternatives.

关键词： iterative learning control optimal algorithms

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A public cryptosystem based on the generated data in extension set

A public cryptosystem based on the generated data in extensi...

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IEEE International Conference on Systems, Man and Cybernetics

作者： Kaiquan Shi Yo-Ping Huang College of Control Science and Engineering Shandong University Jinan Shandong P.R.C Dept. of Computer Science and Engineering Tatung University Taipei Taiwan R.O.C.

ISBN: (纸本)0780370872

Assume X/sup #/ is an extension set in the domain U. Let X/sup A/, X/sup B/ be the positive domain of X/sup #/ in which X/sup A//spl sub/X/sup #/, X/sup B//spl sub/X/sup #/, and X/sup A//spl ne/X/sup B/. X/sup A/={x/sub 1//sup A/, x/sub 2//sup A/, ..., x/sub n//sup A/}, X/sup B/={x/sub 1//sup B/, x/sub 2//sup B/, ..., x/sub n//sup B/}. /spl forall/x/sub 1//sup A/, x/sub 1//sup B//spl isin/N/sup +/, |X/sup A/|/spl ges/4, |X/sup B/|/spl ges/4. By using the accumulated generating operation, we can obtain a mathematical model from X/sup A/ and X/sup B/. From the mathematical model we also derive the sets of X'/sub A/ and X'/sub B/. Both X'/sub A/ and X'/sub B/ are the extended domains of X/sup #/. There exist polynomials p/sup A/(x), p/sup B/(x); and p/sup AB/(x) from X'/sub A/, X'/sub B/, and X/sup AB/, respectively. Based on the p/sup A/(x), p/sup B/(x), and p/sup AB/(x), we propose a new public cryptosystem. In the presented system, we have a public cryptography system from generated data in extension set X/sup #/, a public cryptosystem from two generated data in extension set X/sup #/, and a public cryptosystem from hybrid generated data in extension set X/sup #/. The proposed model is a secure system. Both sides in the communication system can depend on the proposed cryptosystem to fulfill the cryptography of the to-be-transmitted file and de-cryptograph of the cryptograph.

关键词： Cryptography Mathematical model Set theory Hybrid power systems Information systems Information security Educational institutions Polynomials Communication systems Communication system security

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On simulation based analysis and synthesis of hierarchical network sturctures 6

On simulation based analysis and synthesis of hierarchical n...

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6th European control Conference, ECC 2001

作者： Tanevska, Dijana J. Dimirovski, Georgi M. Stankovski, Mile J. Jing, Yuanwei Makedonski Telekomunikacii AD Orce Nikolov Str. b.b. SkopjeMK-91000 Macedonia Inst. of Automation and Systems Engg. Faculty of Electrical Engg. SS Cyril and Methodius University SkopjeMK-1000 Macedonia Department of Computer Engg. Faculty of Engineering DOGUS University Kadikoy-IstanbulTR-81010 Turkey Dept. of Automatic Control and Control Eng. School of Information Science and Engineering Northeastern University Shenyang Liaoning110006 China

ISBN: (纸本)9783952417362

Analysis of complex systems such as hierarchically structured network systems that are employed in modelling and analysis various aspects and issues of control and management in telecommunications is investigated. Theory of graphs and binary matrices appear to be most suitable tools for modelling the overall structure of complex systems, in general, and of systemic hierarchies, in particular. A systematic methodology has been developed for computer simulation analysis and detecting general hierarchies in communications networking as well as for synthesis of system hierarchies. This methodology is an improved extension of Warfield's technique. © 2001 EUCA.

关键词： Discrete event simulation

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Stability of On-line Compensated Real-time Scheduled control Tasks

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IFAC Proceedings Volumes 2001年第22期34卷 319-324页

作者： Pau Martí Ricard Villà Josep M. Fuertes Gerbard Fobler Dept. of Automatic Control Technical University of Catalonia Pau Gargallo 5 08028 Barcelona SPAIN Ph.: 34-3-4011679 Fax: 34-3-4017045 Dept. of Computer Engineering Mälardalen University PO Box 883 SE-721 23 Västerås SWEDEN

Real-time scheduling methods introduce various types of jitter in task instance execution. For real-time computer-controlled systems, the introduced sampling jitter and sampling-actuation delays may degrade the system performance and even lead to instability in the system. The degradation of the system performance can be compensated on-line by updating the controller parameters at each controller task instance execution, in what we call the compensation approach. In this paper we present stability analysis for controller tasks that perform the compensation approach.

关键词： Real-time computer systems Real-time tasks Scheduling algorithms Discrete-time systems Stability analysis

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