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Uncertainty Modeling and Analysis, 1995, and Annual Conference of the North American Fuzzy Information Processing Society. Proceedings of ISUMA - NAFIPS '95., Third International Symposium on

Date 17-20 Sept. 1995

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Displaying Results 1 - 25 of 144
  • Proceedings of 3rd International Symposium on Uncertainty Modeling and Analysis and Annual Conference of the North American Fuzzy Information Processing Society

    Publication Year: 1995
    Request permission for commercial reuse | PDF file iconPDF (556 KB)
    Freely Available from IEEE
  • Author index

    Publication Year: 1995
    Request permission for commercial reuse | PDF file iconPDF (189 KB)
    Freely Available from IEEE
  • From supply and demand to oligopoly via fuzzy sets

    Publication Year: 1995, Page(s):240 - 244
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    This paper links two theoretical models, the oligopoly market form and the supply/demand paradigm, via fuzzy sets to provide an empirically consistent model of fuzzy decision-making. Most significantly, both models are shown to merge in the short-run when decision-making and intrinsic uncertainties are described by fuzzy sets. Our results and method highlight the importance of introducing fuzzy lo... View full abstract»

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  • A fuzzy characterization process for interactive multicriteria decision making

    Publication Year: 1995, Page(s):234 - 239
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    Proposes a fuzzy approach to characterize imprecise preferential information required from the decision maker (DM) operating in an interactive multiple-criteria decision support system (IMCDSS) environment. Fuzzy sets and fuzzy set operations are applied to facilitate information processing during the choice phase of such a decision process. The fuzzy characterizer permits vagueness in the express... View full abstract»

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  • Idempotent closing and opening operations in fuzzy mathematical morphology

    Publication Year: 1995, Page(s):228 - 233
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    A logical approach to the fuzzification of binary mathematical morphology is presented. The fuzzy dilation and fuzzy erosion are introduced independently, using the fuzzy logical operators `conjunctor' and `implicator'. In this way, duality relationships are not forced from the very beginning. It is shown that by choosing suitable fuzzy logical operators, all classical duality and other relationsh... View full abstract»

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  • Life span of concrete structure based on questionnaire survey

    Publication Year: 1995, Page(s):121 - 126
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    This paper presents that a life span on serviceability and safety is obtained from questionnaire survey using Analytical Hierarchy Process (AHP) method. A concrete bridge and landing pier are selected as target structures. Questionnaire is carried our against experts of 12 persons who have an experience for 10 year and engaged in design, research of concrete as experts of durability in University,... View full abstract»

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  • Uncertainties associated with restoring natural alignment to previously straightened streams

    Publication Year: 1995, Page(s):222 - 227
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    Three models are currently used by the Maryland State Highway Administration for designing meanders on stream restoration projects. The first model is based on the relationship of bankfull channel width and meander wave length, the second is based on the relationship between bankfull channel width and the meander belt width and the third is based on the relationship between bankfull channel width ... View full abstract»

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  • A mathematical relationship between set-theoretic and metric compatibility measures

    Publication Year: 1995, Page(s):169 - 174
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    Because of the diversity of fuzzy set applications, a wide variety of compatibility measures have been employed to assess the degree of agreement between two fuzzy sets. Set theoretic compatibility measures are the ones predominantly found in the literature and are based on determining the commonality between two fuzzy sets. Recently, however, metric compatibility measures are being used to assess... View full abstract»

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  • Constructing possibility measures

    Publication Year: 1995, Page(s):472 - 477
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    Addresses some aspects of the extension problem for possibility measures: given the values that a (fuzzy) set mapping takes on a family of (fuzzy) sets, is it possible to extend this mapping to a possibility measure? This problem is shown to be equivalent to a special system of relational equations. When the family of sets considered is a (semi-)partition, two important solutions are identified. I... View full abstract»

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  • Aesthetic design system of structures using neural network and image database

    Publication Year: 1995, Page(s):115 - 120
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (780 KB)

    In recent years, the importance of aesthetic design has become widely and socially recognized. In this research, a neural network was trained with over 100 past examples of bridge design, and the results were combined into an image data base incorporating images from “Bridge Annals≫CLOSE ". As a result, if was possible to construct a system for practical use View full abstract»

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  • A general system identification framework for structural systems

    Publication Year: 1995, Page(s):216 - 221
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    In this paper a general system identification framework for structural systems is developed. With the increase in size and complexity of structural systems, a better understanding, as well as, suitable scheme(s) for monitoring and controlling the performance of systems needs to be developed. The first stage in the development of any control and/or monitoring system, is the identification and model... View full abstract»

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  • Uncertainties in loads for ships structures

    Publication Year: 1995, Page(s):460 - 465
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    Structural reliability analysis requires characterizing uncertainties in strength and loads for selected failure modes. The objective of this paper is to study the uncertainties associated with the vertical wave-induced bending moment on ship hull girders. Also, uncertainties in whipping effects are investigated. Spectral analysis was used to calculate the maximum life-time wave loads on a ship wi... View full abstract»

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  • A grey fuzzy multiobjective programming approach for the optimal planning of municipal solid waste management systems

    Publication Year: 1995, Page(s):424 - 429
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    The paper proposes a new approach-a grey fuzzy multiobjective mixed integer programming (GFMOMIP) model-for the evaluation of sustainable management strategies of solid waste management in a metropolitan region. In particular, it demonstrates how uncertain messages can be quantified by specific membership functions and combined through the use of grey numbers in a multiobjective solid waste manage... View full abstract»

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  • Fuzzy reasoning for decision making in object recognition

    Publication Year: 1995, Page(s):163 - 168
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    The area of object recognition has a long history as a subarea of computer vision, with most systems using either probabilistic or heuristic methods for reasoning about the uncertainty inherent in sensed images. The paper highlights recent work in applying fuzzy set theory to the two main processes in object recognition: grouping and matching. Fuzzy sets are a natural model for both grouping and m... View full abstract»

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  • Ordering fuzzy sets generated by a neural network algorithm

    Publication Year: 1995, Page(s):800 - 805
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (516 KB)

    Ordering fuzzy subsets is an important event in dealing with fuzzy decision problems in many areas. This issue has been of concern for many researchers over the years. Also, in the last several years, there has been a large and energetic upswing in neuroengineering research aimed at synthesizing fuzzy logic with computational neural networks. The two technologies often complement each other: neura... View full abstract»

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  • Neural network analysis of structural damage due to corrosion

    Publication Year: 1995, Page(s):109 - 114
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    We attempt to develop a practical decision support system for the damage assessment of structural corrosion. This system aims to aid inexperienced inspectors to judge whether a certain bridge should be repaired or not. For this purpose, it is attempted to apply the neural network technique for the damage assessment. The learning ability of the neural network is useful to save the working time and ... View full abstract»

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  • Developing robust system designs under uncertainty: a systematic approach to design evaluation

    Publication Year: 1995, Page(s):210 - 215
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    To develop quality systems, both engineering and management require fundamental principles and methodologies to guide design decision making and advanced planning. This paper presents a systematic approach to support the need for developing better system designs in the face of uncertainties. This approach is developed by integrating statistical decision theory, elements of the systems engineering ... View full abstract»

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  • Signal parameter estimation when the parameters are fuzzy variables

    Publication Year: 1995, Page(s):595 - 600
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    We present a methodology for estimation of the fuzzy parameters of a stochastic signal. The proposed approach minimizes a fuzzy average decision error probability by a proper choice of decision regions. We use a scalar index, called the total distance criterion (TDC) ranking index, in order to rank the fuzzy average decision error probabilities of different decision rules. We identify, the optimal... View full abstract»

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  • Numerical modeling and higher moments analysis of response characteristics in random structural systems

    Publication Year: 1995, Page(s):455 - 459
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    A moment-based method founded on the maximum-entropy principle is applied in this paper with the aim of quantifying the uncertainty associated with structural behaviour, for systems affected with imperfect knowledge in the input parameters. A numerical model implemented on a microcomputer is employed for the preliminary identification of a response surface approximating the input-output mechanical... View full abstract»

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  • Ordering fuzzy numbers with application to fuzzy linear programming

    Publication Year: 1995, Page(s):420 - 423
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (228 KB)

    We present an approach for ordering fuzzy numbers, then we utilize it to suggest two models for solving the fuzzy linear programming (FLP) problem. In this research we present a new approach for ordering two fuzzy numbers and show some practical advantages of it over other methods. We also utilize the suggested approach to introduce two techniques to solve the FLP problem. In the first technique, ... View full abstract»

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  • Determining fuzzy measures by Choquet integral

    Publication Year: 1995, Page(s):724 - 727
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    Fuzzy measures and the Choquet integral are generalizations of classical measures and the Lebesgue integral, respectively. Given a fuzzy measure and a nonnegative measurable function on a measurable space, the Choquet integral determines a new fuzzy measure that is absolutely continuous with respect to the original one (in a generalized sense for fuzzy measures). This new fuzzy measure preserves a... View full abstract»

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  • The use of fuzzy rules in classification of normal human brain tissues

    Publication Year: 1995, Page(s):157 - 162
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    Automatic classification and tissue labeling of 2D magnetic resonance images of the human brain may involve a preliminary clustering stage. Segmenting large multidimensional data sets like those from magnetic resonance images is very time consuming. Better performance at the clustering stage as achieved if partial classification of the image can be done before applying clustering. We show the use ... View full abstract»

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  • Fuzzy system representation of car-following phenomena

    Publication Year: 1995, Page(s):798 - 799
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (80 KB)

    Summary form only given. Understanding the way vehicles interact with one another within a traffic stream is an important topic in transportation engineering. The specific situation being studied is when a driver is following another vehicle because his/her speed is constrained by the vehicle ahead, or roadway or traffic conditions that do not allow passing. This is termed a car-following situatio... View full abstract»

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  • Application of genetic algorithm to bridge construction management

    Publication Year: 1995, Page(s):105 - 108
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    Genetic algorithms (GA) have attracted attention in recent years as a method of solving combinatorial optimization problems. This research is an application of these algorithms to the problem of determining the laying sequence for a continuous girder reinforced concrete floor system. If the number of design variables and the number of combinations are large, it is often impossible to obtain a solu... View full abstract»

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  • Design of fuzzy seawater lift pump system in fossil fired power plant

    Publication Year: 1995, Page(s):204 - 208
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    The Sea Water Lift Pump (SLP) system is responsible for maintaining the open canal level to provide the suction flow of Circulating Water Pump (CWP) at the set point. The response of the SLP system is so slow that it is difficult to maintain an optimal open canal level by manual or two step pump speed control operation and to reduce overflow of seawater. The objective of this paper is to apply the... View full abstract»

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