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1997 Annual Meeting of the North American Fuzzy Information Processing Society - NAFIPS (Cat. No.97TH8297)

21-24 Sept. 1997

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  • 1997 Annual Meeting of The North American Fuzzy Information Processing Society - NAFIPS'97

    Publication Year: 1997, Page(s):0_3 - 0_13
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    Freely Available from IEEE
  • 1997 Annual Meeting of the North American Fuzzy Information Processing Society - NAFIPS (Cat. No.97TH8297)

    Publication Year: 1997
    Request permission for commercial reuse | PDF file iconPDF (400 KB)
    Freely Available from IEEE
  • Author index

    Publication Year: 1997, Page(s):451 - 453
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    Freely Available from IEEE
  • Fuzzy granulation and modular tiling: a useful duality

    Publication Year: 1997, Page(s):388 - 393
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    Fuzzy granulation refers to a family of very powerful techniques that allow computers to represent and manipulate the kind of knowledge that humans tend to actually possess regarding system capabilities, desirable system performance, and control policies to use the former to approach the latter. One of the most well established of this family of techniques may be referred to as Mamdani Granulation... View full abstract»

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  • On a class of linear concurrence operators

    Publication Year: 1997, Page(s):383 - 387
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    Mean operators are often used to find a representative value for a collection of data. A new class of operators, in the same spirit as mean operators, called concurrence operators are then introduced which replace the idempotency condition by the stronger conditions of natural boundedness and self identity and removes the requirement of commutativity. A class of linear concurrence operators are th... View full abstract»

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  • Fuzzy sets over evolving universes

    Publication Year: 1997, Page(s):377 - 382
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    Fuzzy membership functions may be defined over universes of discourse that are not fixed and well known but that instead are subject to evolution, that is to say universes of discourse that change over time according to some probability distribution. In such a case, the value of the membership functions will depend upon the probability distribution defined on the universe. If the distribution is u... View full abstract»

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  • Lattice-valued logic and neural networks

    Publication Year: 1997, Page(s):350 - 355
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    Lattice-valued logic is a generalized logic whose definition function is set-valued. It can be applied to switching systems by defining a lattice-valued switch (LVS) whose parallel connection “∪” and cascade connection “∩” are generalized operators which may correspond respectively to the “max” (v) and “min” (∧) operators in fuzzy logic, ... View full abstract»

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  • Fuzzy variants of hard classification rules for speech pattern recognition in Romanian language

    Publication Year: 1997, Page(s):172 - 176
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    The paper presents results obtained in a vowel recognition task applying unsupervised and supervised fuzzy algorithms and fuzzy neural networks. The vowels, uttered from 10 speakers each in 1000 different contexts are recognized using as features the first three formant frequencies. Feature extraction is presented and two fuzzy algorithms, fuzzy ISODATA and fuzzy k-NN, and the fuzzy multilayer per... View full abstract»

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  • A safety analysis method using fuzzy Petri nets

    Publication Year: 1997, Page(s):412 - 417
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    A backward safety analysis method that can deal with both severity and risk by virtue of fuzzy theory is proposed in this work. Fuzzy Colored Petri Net (FCPN) is developed and applied to the safety analysis method. The feasibility of this method is demonstrated through a popular example View full abstract»

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  • Fuzzy reasoning with continuous piecewise linear membership functions

    Publication Year: 1997, Page(s):371 - 376
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    It is shown that, for some intersection and implication functions, the complexity of the computation of inference results with generalised modus ponens can be reduced considerably when membership functions are restricted to functions which are continuous and piecewise linear. Algorithms for computing inference results are given in the functional language Miranda View full abstract»

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  • Finding a base for a vector space of polynomials

    Publication Year: 1997, Page(s):283 - 285
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (128 KB)

    In (Carre, 1979), and in other presentations the author proposed the definition of a fuzzy graph as a pair of vector spaces. The underlying reason for the departure from its usual definition as depicting a fuzzy relation, is not only the elegance of the new definition but also because of the practicality of having the tools of linear algebra available should we be able to find a basis for each vec... View full abstract»

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  • Application of fuzzy neural networks on financial problems

    Publication Year: 1997, Page(s):347 - 349
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    For two financial applications-price forecasting and customer credit rating-the fuzzy neural network approach improves the network quality. This type of network faces less problems than the classical network approach. In this paper some practical viewpoints are presented, with focus on the forecasting of time series View full abstract»

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  • Genetic algorithms used for determining belief measures and plausibility measures

    Publication Year: 1997, Page(s):195 - 198
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    Regarding the Choquet integral as a multi-input single-output system, one can use a set of input-output data to determine the belief measure or plausibility measure for the Choquet integral concerned. The least square method and a genetic algorithm are applied for this purpose View full abstract»

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  • Learning algorithms and dimensionality

    Publication Year: 1997, Page(s):106 - 111
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    Approximation theory based on fuzzy sets provides a tool for modeling complex systems for which only an imprecise or approximate specification is available. In classical modeling, the system relationships are expressed mathematically as a function whose domain consists of the possible inputs to the system and whose range is the appropriate responses. Due to the complexity of the interactions in so... View full abstract»

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  • Character recognition with fuzzy features and fuzzy regions

    Publication Year: 1997, Page(s):166 - 171
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (580 KB)

    The authors propose a method for character recognition using fuzzy features and fuzzy regions in a neural network. The method is robust to noise and distorting, scaling, and shifting of the patterns within their pixel frames, yet it is mathematically simple. The fuzzy neural network presented in the paper consists of three layers: a layer for feature extraction, for regional emphasis of features, ... View full abstract»

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  • The applications of fuzzy comprehensive evaluation to test programs analysis

    Publication Year: 1997, Page(s):406 - 411
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    This paper presents an approach to support analysis and debugging of VLSI device test programs. In research into the previous work, we find that there are two restrictions in program debugging: computational complexity and diagnostic precision, which greatly influence the effect of program debugging. In the paper, we apply Fuzzy Mathematics, especially Fuzzy Comprehensive Evaluation, to research o... View full abstract»

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  • Formulae of fuzzy logics

    Publication Year: 1997, Page(s):367 - 370
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    Fuzzy normal form formulae of linguistic expressions are derived with the construction of “extended truth tables”. Depending on the set of axioms exhibited, and on the application to linguistic expressions of a person's native intelligence, we might arrive at different computational intelligence expressions for purposeful goal oriented control of systems View full abstract»

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  • Differentiation of fuzzy functions

    Publication Year: 1997, Page(s):295 - 298
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    We introduce in a natural way a measure of fuzziness of a fuzzy function. This measure is used to show that the derivative of a fuzzy function can be considered as a fuzzy linear transformation of a space of differentiable fuzzy functions to the space of fuzzy numbers View full abstract»

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  • Analysis of concomitant mechanisms in stroke pathogenesis using fuzzy clustering techniques

    Publication Year: 1997, Page(s):211 - 216
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    This paper looks at the potential interactions between blood, heart, and vessel conditions in the stroke patient. The present study tries to define the degree of severity of each of three groups of diagnostic categories, blood, heart, and vascular while allowing more than one to be present at once. Each condition was given a fuzzy value in the range [0,1] according to expert opinion of the severit... View full abstract»

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  • Primaries of infinite fuzzy automata

    Publication Year: 1997, Page(s):279 - 282
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    The primaries play the role of the natural fuzzy substructures of a fuzzy automata. The primary decomposition theorem “every nonempty automaton is uniquely decomposible into (not necessarily disjoint) primaries, and each primary has a state that belongs to no other primary” is presented View full abstract»

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  • Self-organising fuzzy perceptrons applied to power system stability

    Publication Year: 1997, Page(s):341 - 346
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    Organising and adjusting a neuro-fuzzy system is been presented in this paper. A fuzzy inference system has been implemented on a multilayer perceptron, in which the weights are fuzzy membership. The parameters of the fuzzy multilayer perceptron are meaningful and have physical interpretation. A hierarchical procedure is proposed for design and organising the system in three levels: predefining th... View full abstract»

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  • Determining fuzzy integral densities using a genetic algorithm for pattern recognition

    Publication Year: 1997, Page(s):263 - 267
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    By utilizing information provided from different sources, data fusion has been a very effective method to achieve good performance in many applications, such as pattern recognition and decision making. The fuzzy integral is one of the many ways to combine those information sources. Successful applications have shown that, if used properly, the fuzzy integral can be a powerful tool in dealing with ... View full abstract»

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  • The calculation of natural extensions with respect to lower probabilities

    Publication Year: 1997, Page(s):191 - 194
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

    The concept of natural extension plays an important role in the theory of imprecise probabilities. It is a nonlinear functional on the class of nonnegative finite measurable functions. The difficulty of its calculation restricts applications of the theory. The paper provides a fast algorithm by which a precise value of the natural extension of a given nonnegative finite function with respect to a ... View full abstract»

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  • Learning optimal fuzzy rules using simulated annealing

    Publication Year: 1997, Page(s):102 - 105
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    Fuzzy systems can uniformly approximate continuous functions, but the number of rules increases geometrically with system dimension. Fast simulated annealing that uses alpha stable generating functions to search locally and tunnel through space can solve large optimization problems. Alpha values less than 1 can find the optimal fuzzy rules that approximate a function. The thick tails of these dist... View full abstract»

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  • Using spatial relationships as features in object recognition

    Publication Year: 1997, Page(s):160 - 165
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    Information about the spatial relationships among objects in an image is an important clue towards identifying the objects and in interpreting the contents of the scene. Four primitive spatial relations (LEFT, ABOVE, RIGHT, BELOW) were used as features in a handwritten digit recognition problem. The fuzzy membership values of these four relations between every pair of cavities in each handwritten ... View full abstract»

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