Proceedings Joint 9th IFSA World Congress and 20th NAFIPS International Conference (Cat. No. 01TH8569)

25-28 July 2001

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  • Joint 9th IFSA World Congress and 20th NAFIPS International Conference [front matter]

    Publication Year: 2001, Page(s):0_1 - xxii
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    Freely Available from IEEE
  • Index

    Publication Year: 2001, Page(s): I
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  • Fuzzy rule interpolation for multidimensional input space with petroleum engineering application

    Publication Year: 2001, Page(s):2470 - 2475 vol.4
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB) | HTML iconHTML

    Fuzzy rule based systems have been very popular in many engineering applications. In petroleum engineering, fuzzy rules are normally constructed using some fuzzy rule extraction techniques to establish the petrophysical property prediction model. However, when generating fuzzy rules from the available information, it may result in a sparse fuzzy rule base. The use of more than one input variable i... View full abstract»

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  • Modified genetic algorithms based on disparity theory of evolution

    Publication Year: 2001, Page(s):2235 - 2240 vol.4
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB) | HTML iconHTML

    Generally, it has been a problem that the searching performance in the initial and final stages of a genetic algorithm (GA) search is not always good because the genetic parameters are normally constant. We apply the disparity theory of evolution proposed by M. Furusawa et al. (1992) to GA searches. In this research, we propose a parity-and-disparity model of GAs, which uses the mutation algorithm... View full abstract»

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  • SQLf and FQUERY for Access

    Publication Year: 2001, Page(s):2464 - 2469 vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB) | HTML iconHTML

    FQUERY for Access, designed and implemented in its pilot version by the authors (J. Kacprzyk, and S. Zadrozny, 1995; 1999), provides for the processing of fuzzy queries in the framework of the popular Microsoft Access(R) database management system. The authors discuss some enhancement to the package that are inspired by the concepts elaborated by P. Bosc and O. Pivert (1995) in a series... View full abstract»

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  • Stabilization control of ball and beam systems

    Publication Year: 2001, Page(s):2229 - 2234 vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB) | HTML iconHTML

    A new fuzzy controller for stabilization control of ball-and-beam systems is proposed based on the SIRM (single-input rule module) dynamically connected fuzzy inference model. The fuzzy controller deals with four input items. Each input item has a SIRM and a dynamic importance degree. By using the SIRMs and the dynamic importance degrees, the fuzzy controller automatically switches the ball positi... View full abstract»

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  • A CLIPS-based implementation for querying binary spatial relationships

    Publication Year: 2001, Page(s):2388 - 2393 vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB) | HTML iconHTML

    The power of spatial queries for analysis and planning purposes in many different application fields has drawn significant attention within the GIS research field. The extraction of meaningful information from spatial data requires specialized data structures, query languages and query processing strategies. The paper is primarily concerned with the binary data structures that support the fuzzy qu... View full abstract»

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  • Application of genetic algorithms to hypersonic flight control

    Publication Year: 2001, Page(s):2428 - 2433 vol.4
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB) | HTML iconHTML

    The paper presents an application of genetic algorithms to the design of a longitudinal flight controller for a hypersonic accelerator vehicle which is to be used to launch small satellites. A feature of hypersonic air-breathing flight vehicles is the high level of engine integration with the airframe. As a result, maintenance of vehicle attitude is not simply an issue of stability, but also one o... View full abstract»

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  • At the crossroads of fuzzy Galois lattice and information retrieval

    Publication Year: 2001, Page(s):2458 - 2463 vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB) | HTML iconHTML

    The authors propose a new algorithm for generating a fuzzy Galois lattice from a fuzzy binary relation. As a practical application of the fuzzy Galois lattice, we show that it can be used as an underlying basic structure access, for providing relevant additional information to a user asking queries to an indexed documentary database View full abstract»

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  • Maneuvering target tracking by using particle filter

    Publication Year: 2001, Page(s):2223 - 2228 vol.4
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB) | HTML iconHTML

    The aim of this research is to track a maneuvering target, e.g. a ship, an aircraft, and so on. We use a state-space representation to model this situation. The dynamics of the target is represented by a system model, firstly in continuous time, though a discretized system model is actually to be used in practice. The position of the target is measured by radar, and this process is described by a ... View full abstract»

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  • Linguistic modifiers and measures of similarity or resemblance

    Publication Year: 2001, Page(s):2195 - 2199 vol.4
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB) | HTML iconHTML

    On the one hand, linguistic modifiers can be used to express imprecise values of variables which are described around a given fuzzy set. On the other hand, measures of comparison of fuzzy sets, such as measures of satisfiability or resemblance for instance, enable us to establish the proximity between two imprecise values of variables. A formal connection between modifiers and measures of comparis... View full abstract»

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  • Representing continuous spatial variation of geographic phenomena using fuzzy logic

    Publication Year: 2001, Page(s):2382 - 2387 vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (676 KB) | HTML iconHTML

    Variation of geographical phenomena is often gradual and continuous over space. A discrete model based on Boolean logic has been used to portray (map) this gradual and continuous spatial variation. Due to the limitation of this discrete model, spatial variation of geographic phenomena is portrayed by discrete and distinct spatial units, and changes only occur at the boundaries of these units. As a... View full abstract»

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  • Fuzzy cognitive maps for decision support in an intelligent intrusion detection system

    Publication Year: 2001, Page(s):2165 - 2170 vol.4
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB) | HTML iconHTML

    The health of a computer network needs to be assessed and protected in much the same manner as the health of a person. The task of an intrusion detection system is to protect a computer system by detecting and diagnosing attempted breaches of the integrity of the system. A robust intrusion detection system for a computer network will necessarily use multiple sensors, each providing different types... View full abstract»

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  • Genetic programming for life-time learning of a mobile robot

    Publication Year: 2001, Page(s):2422 - 2427 vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB) | HTML iconHTML

    The paper deals with a mobile robot with structured intelligence. The robot interacts with a dynamic environment. The evaluation criteria or functions are the strategy for the behavior acquisition. Generally, it is difficult for human operators to describe the internal models of the robot because the organization of the robot is quite different from that of a human. In the optimization, the evalua... View full abstract»

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  • Use of intervals for soft classification in fuzzy neural networks

    Publication Year: 2001, Page(s):2003 - 2007 vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB) | HTML iconHTML

    Neural networks can be used to classify input data into one of a given set of categories. With limited training sets, crisp neural network results are predictably poor. Incorporation of fuzzy techniques improves performance in these cases. Even though fuzzy neural networks classify imprecise data quite well, the incorporation of a soft decision classification lowers the error rate substantially. T... View full abstract»

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  • A first approach to possibilistic queries addressed to possibilistic databases

    Publication Year: 2001, Page(s):2452 - 2457 vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB) | HTML iconHTML

    It is now recognized that querying databases containing imprecise information raises several problems, including that of complexity. The authors consider a new kind of query, called possibilistic queries, of the form "to what extent is it possible that a given tuple t belongs to the answer of Q (a regular relational query)". The paper is a first attempt to show that a reasonable complexity can be ... View full abstract»

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  • Evolving multiple sensory-motor controllers based on cellular neural network

    Publication Year: 2001, Page(s):2218 - 2222 vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB) | HTML iconHTML

    There has been extensive work done to construct an optimal neural network for controlling a mobile robot by evolutionary approaches such as genetic algorithms, genetic programming, and so on. However, evolutionary approaches have difficulty in obtaining a controller that conducts complex and general behaviors. In order to overcome this shortcoming, we propose a method of combining several evolved ... View full abstract»

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  • Fuzzy data analysis for three-way data

    Publication Year: 2001, Page(s):2189 - 2194 vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB) | HTML iconHTML

    In this paper, fuzzy data analysis for three-way data is discussed. The paper proposes a modeling technique to deal with complex perceptions or evaluations. It provides the tendency of people's opinions, and at the same time, their diversity. This modeling technique is useful for analyzing subjective feeling of people in, for instance, product planning, city planning, or any social decision-making View full abstract»

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  • Fuzzy techniques for multiple criteria decision making in GIS

    Publication Year: 2001, Page(s):2376 - 2381 vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB) | HTML iconHTML

    Spatial decision making is a fundamental function of contemporary geographic information systems (GIS). One of the most fertile GIS development areas is integrating multiple criteria decision models (MCDM) into GIS querying mechanisms. The classic approach for this integration has been to use Boolean techniques of MCDM with crisp representations of spatial objects (features) to produce static maps... View full abstract»

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  • Fuzzy disjunctive and conjunctive canonical forms: a foundation for interval-valued fuzzy techniques

    Publication Year: 2001, Page(s):2353 - 2358 vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB) | HTML iconHTML

    Fuzzy disjunctive and conjunctive canonical forms, FDCF, and FCCF, respectively, should be used as a foundation for interval-valued approximate reasoning. It has been shown that in the combination of linguistic concepts, membership values generated by linguistic operators, "AND", "OR", "IMP", etc., as opposed to crisp connectives that are known as t-norms and t-conorms and standard negation, are c... View full abstract»

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  • Indexing fuzzy data

    Publication Year: 2001, Page(s):2120 - 2125 vol.4
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB) | HTML iconHTML

    Providing efficient query processing in database systems is one step in gaining acceptance of such systems by end users. We propose several techniques for indexing fuzzy sets in databases to improve the query evaluation performance. Three of the presented access methods are based on superimposed coding, while the fourth relies on inverted files. The efficiency of these techniques was evaluated exp... View full abstract»

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  • Discovering similar time-series patterns with fuzzy clustering and DTW methods

    Publication Year: 2001, Page(s):2160 - 2164 vol.4
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB) | HTML iconHTML

    Data mining, as an active field, discovers useful knowledge from large data sets. This paper focuses on continuous time series data that have often been encountered in real applications (e.g., sales records, economic data and stock transactions) and discusses how to discover the hidden relationship among time series patterns in terms of their similarities. Fuzzy clustering and dynamic time warping... View full abstract»

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  • Rule conversion in knowledge acquisition for flowshop scheduling problems

    Publication Year: 2001, Page(s):2417 - 2421 vol.4
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB) | HTML iconHTML

    The authors examine the performance of an inductive decision tree learning system to acquire important knowledge for flowshop scheduling problems, and propose a rule conversion method from acquired rules by the system. We employ an inductive learning process for producing decision trees like the C4.5 proposed by J.R. Quinlan (1993). Several rules for job assignment are obtained from decision trees... View full abstract»

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  • Interval and fuzzy techniques for plan checking under uncertainty

    Publication Year: 2001, Page(s):1997 - 2002 vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB) | HTML iconHTML

    The main problem of planning is to find a sequence of actions that an agent must perform to achieve a given objective. An important part of planning is checking whether a given plan achieves the desired objective. Historically, in AI, the planning and plan checking problems were mainly formulated and solved in a deterministic environment, when the initial state is known precisely and when the resu... View full abstract»

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  • Hemodynamic alarm system for pulmonary artery catheters in an intensive care unit

    Publication Year: 2001, Page(s):1967 - 1972 vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB) | HTML iconHTML

    A pulmonary artery (PA) catheter (PAC) is placed in a large vein and guided through the right side of the heart to the PA. The PAC measures blood pressure in the PA directly and indirectly in the left atrium through a procedure called "wedging". Since the PAC is in a dynamic environment, inaccurate measurements can result for various reasons (events). We constructed an online fuzzy expert system t... View full abstract»

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