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Fuzzy Information Processing Society, 2000. NAFIPS. 19th International Conference of the North American

Date 13-15 July 2000

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Displaying Results 1 - 25 of 101
  • 19th International Conference of the North American Fuzzy Information Processing Society - NAFIPS [front matter]

    Publication Year: 2000, Page(s):i - xi
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    Freely Available from IEEE
  • An interval approach to fuzzy surroundedness and fuzzy spatial relations

    Publication Year: 2000, Page(s):100 - 104
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (583 KB)

    To describe a picture, spatial relations between image regions provide information concerning relative spatial position of two regions. This information could be for example: one region is left of another region. The definition of such entity is not easy in general and the manner in which spatial data is modeled affects important aspects of its use. So how to model a situation in which both the da... View full abstract»

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  • An interval approach to handwriting recognition

    Publication Year: 2000, Page(s):153 - 157
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (517 KB)

    A language is a set of symbols, signs, sounds, .... Each language has its own signs (Arab, Japanese, Latin....) that people discern easily. In fact, one gives these symbols (isolated or regrouped in a words or sentences) senses or meaning. It is a means of communication to describe our desires, our thought, our needs, .... Nevertheless, there are always basic references through which one communica... View full abstract»

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  • Proceedings 2000 International Database Engineering and Applications Symposium (Cat. No.PR00789)

    Publication Year: 2000
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    Freely Available from IEEE
  • Author index

    Publication Year: 2000, Page(s):495 - 496
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    Freely Available from IEEE
  • Fuzzy multicriteria evaluation in traditional Chinese medical diagnosis of cerebral apoplexy: an application of approximate reasoning

    Publication Year: 2000, Page(s):211 - 214
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (108 KB)

    Many factors, criteria and double stage models based on approximate reasoning have been applied successfully to traditional Chinese medical diagnostic systems, which is more in accordance with the thinking processes of a doctor of traditional Chinese medicine in diagnosing difficult and complicated cases View full abstract»

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  • Consensus of group decisions applied to bone mineral density

    Publication Year: 2000, Page(s):206 - 210
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    Using group decision techniques, it has been shown that there is an association between the vitamin receptor gene and bone mineral density. We determine the strength of consensus of the group decision View full abstract»

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  • Computational complexity of hierarchical fuzzy systems

    Publication Year: 2000, Page(s):383 - 387
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    The computational complexity of a conventional fuzzy system (CFS) and hierarchical fuzzy systems without defuzzification (HFSs w/o DF) are analysed in terms of the electronic components needed to construct a computational circuit to calculate the intermediate outputs between layers and to carry out crisp output from the last layer in the hierarchy. Furthermore, two different types of HFS w/o DF ar... View full abstract»

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  • A modified fuzzy C-means algorithm for feature selection

    Publication Year: 2000, Page(s):148 - 152
    Cited by:  Papers (2)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    In this paper we propose a novel method for feature selection based on a modified fuzzy C-means algorithm with supervision (MFCMS). MFCMS adopts an appropriately modified version of the objective function used by the classic fuzzy C-means. We applied MFCMS to some real-world pattern classification benchmarks. To test the effectiveness of MFCMS as feature selector, we used the well-known k-nearest ... View full abstract»

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  • Simulation of the human glucose metabolism using fuzzy arithmetic

    Publication Year: 2000, Page(s):201 - 205
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    With the object of future improvement of the medical treatment of diabetes, human glucose metabolism is simulated using fuzzy arithmetic to take into account the uncertainties in the physiological model. For this purpose, the uncertain model parameters and model inputs are represented by fuzzy numbers with their shape derived from experimental data or expert knowledge. To avoid the disadvantageous... View full abstract»

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  • Agglomerative model for fuzzy relational clustering (FRC)

    Publication Year: 2000, Page(s):267 - 271
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    The concept of agglomerative model has been incorporated in fuzzy relational clustering (FRC) to address the issue of unknown numbers of clusters and a new agglomerative fuzzy relational clustering (A-FRC) is proposed. The method starts with a large number of small clusters. As the iteration proceeds, the number of clusters is progressively reduced based on the cardinality of the clusters. The alg... View full abstract»

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  • Rule based fuzzy cognitive maps-qualitative systems dynamics

    Publication Year: 2000, Page(s):407 - 411
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    This paper focuses on the rule based fuzzy cognitive maps (RB-FCM) potential to model the dynamics of qualitative real-world systems that include feedback links. It presents a general overview of RB-FCM and proposes a set of possible concepts and relations. It also provides guidelines to introduce time as an important qualitative entity of cognitive maps View full abstract»

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  • Improving railway crew scheduling quality: a hybrid approach

    Publication Year: 2000, Page(s):378 - 382
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    Crew management is a major problem for transportation systems such as airlines, railways and public bus transportation. Advances in scheduling methodologies and decision support systems have been substantial in the last years, but they still need improvement, especially from the computational efficiency and practical point of view. This paper presents a hybrid approach based on search strategies, ... View full abstract»

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  • Fuzzy clustering with outliers

    Publication Year: 2000, Page(s):143 - 147
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    In this paper we introduce a modified objective function for fuzzy clustering. We add an additional weighting factor for each datum and derive necessary conditions for the introduced parameter in order to optimise the objective function. These conditions are used in an alternating optimisation scheme to calculate a partition of sample data. The obtained weights determine a kind of representativene... View full abstract»

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  • Forecasting enrolments with high-order fuzzy time series

    Publication Year: 2000, Page(s):196 - 200
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    This paper studies the influence of a novel scheme. First-order fuzzy time series models embedded with this novel scheme become high-order. To illustrate this high-order model, the forecasting of enrolments is conducted. The results are compared with those of Chen's method and those of the Song-Chissom method. It is found that the root mean square error of the forecast can be improved from 630.86 ... View full abstract»

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  • Bottom-up fuzzy partitioning in fuzzy decision trees

    Publication Year: 2000, Page(s):326 - 330
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    FID is a publicly available fuzzy decision tree software package for classifying fuzzy data. This paper describes a new bottom-up domain partitioning technique, which has just been implemented to complement the previously available top-down technique View full abstract»

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  • Classification by attribute evaluation

    Publication Year: 2000, Page(s):123 - 127
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    We consider a classification of objects by combining classification estimates that are derived from attributes of each object. These estimates are modelled as fuzzy sets and are combined with the help of a decision function into an output fuzzy set that represents the overall assessment of the object. A final linguistic classification is obtained by comparing the output of the decision function wi... View full abstract»

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  • Lukasiewicz inference in Layman's probability theory

    Publication Year: 2000, Page(s):420 - 423
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (236 KB)

    A prior work introduced Layman's probability theory as a formal system for reasoning with linguistic likelihood, wherein the logical and is interpreted as the arithmetic min, and the or is interpreted as the max. Likelihood modifiers (likely, very likely, somewhat unlikely, etc.) are treated as modal operators. The system is two-leveled, with the lower level being a multivalent logic and the upper... View full abstract»

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  • A fuzzy clustering model of data with proportional membership

    Publication Year: 2000, Page(s):261 - 266
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    The fuzzy clustering proportional membership (FCPM) proposes a model of how data are generated from a cluster structure to be identified. Cluster prototypes and membership functions are meaningful in the context of the model. In particular, the membership of an entity to a cluster expresses the proportion of the cluster's prototype reflected in the entity (proportional membership). We explore the ... View full abstract»

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  • Management questionnaire analysis through a linguistic hard C-means

    Publication Year: 2000, Page(s):402 - 406
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    Management studies often gather abstract, numerical data from humans. Employees' attitudes and perceptions regarding organizations and their practices are collected. Most models that use this data account for probabilistic uncertainty, but not for vagueness uncertainty. In an earlier paper, Adrian (1998) considered the utility of allowing respondents to draw fuzzy membership functions over the set... View full abstract»

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  • On fuzzy competitive exception learning

    Publication Year: 2000, Page(s):34 - 38
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB)

    A competitive exception learning algorithm (CELA) is proposed which derives exceptional patterns from a given set of data pairs. In the first step of the algorithm, the output space is fuzzily partitioned (using a competitive learning algorithm) and then characterized by a so-called unconditional cluster membership distribution. In the second step, the input space is fuzzily partitioned as well by... View full abstract»

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  • Dynamic hierarchical fuzzy systems: analysis and design using a state space model

    Publication Year: 2000, Page(s):373 - 377
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    General formulae for generic hierarchical fuzzy systems (HFS) are derived using a recursive approach and various special cases are catered for. A discrete time dynamic hierarchical fuzzy controller (HFC) is analysed and a design method for the HFC is presented. Further a sufficient condition for the stability of the combined global HFS and HFC are presented and some examples are presented to illus... View full abstract»

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  • Assigning membership degrees to points of fuzzy boundaries

    Publication Year: 2000, Page(s):444 - 447
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    There has been a growing interest in the field of geographic information systems (GIS) to model vague and uncertain regions for which information about a given property is available (e.g. soil structure). Vague and uncertain mean in general that some knowledge is available about the position and the circumference of such a region, but that the information is mostly imprecise or lacks certainty. Ei... View full abstract»

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  • Forecasting exchange rates with fuzzy logic and approximate reasoning

    Publication Year: 2000, Page(s):191 - 195
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (180 KB)

    We study the influence of a novel scheme which can be embedded into the Chen model. The data of historical records of exchange rates between the US Dollar and NT Dollar shown by Wu and Shih (1994) are conducted. The root mean square error of the forecasts can be improved from 0.1872 for Chen's method to 0.0314 for the current model View full abstract»

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  • A comparison of fuzzy, stochastic and deterministic methods in linear programming

    Publication Year: 2000, Page(s):321 - 325
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    This paper focuses on relationships among some fuzzy, stochastic and deterministic optimization methods for solving linear programming problems. In particular, we look at several methods to solve one problem as a means of comparison and interpretation of the solutions among the methods View full abstract»

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