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22nd International Conference of the North American Fuzzy Information Processing Society, NAFIPS 2003

24-26 July 2003

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Displaying Results 1 - 25 of 98
  • Cooperative Cleaning for distributed Autonomous robot systems using Fuzzy Cognitive Maps

    Publication Year: 2003, Page(s):287 - 290
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB) | HTML iconHTML

    Cooperative Autonomous Cleaning is a simple challenge that can be implemented with the help of Fuzzy Cognitive Maps (FCM) by simulating the actual thinking process of the human. The human mind organizes its thoughts in priorities and this feature could be exploited well if a priori knowledge of the system exists. This technique has been attempted here for a DARS. View full abstract»

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  • Fuzzy matrix analysis of the maximum road in traffic network

    Publication Year: 2003, Page(s):283 - 286
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (375 KB) | HTML iconHTML

    In this paper, the concepts of fuzzy traffic network, road width and maximum road are introduced. Based on the fuzzy matrix representing traffic network the connection between the maximum road width and the power operation of the fuzzy matrix is discussed. And then the arithmetic solving method and the implemental program for the maximum road are introduced. They have practical value in analyzing ... View full abstract»

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  • Detecting possibility of complications of diseases using rough set based granulation

    Publication Year: 2003, Page(s):266 - 271
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (410 KB) | HTML iconHTML

    One of the most important problems with medical expert systems is that they cannot make a differential diagnosis with complicated cases. This paper reviews reasoning about complications from the viewpoint of information granulation and proposes an approach to extracting rules for diagnosis of complications from clinical datasets. The illustrative example show that rough set based granular computin... View full abstract»

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  • Fuzzy sets are fuzzy-continous

    Publication Year: 2003, Page(s):244 - 247
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (339 KB) | HTML iconHTML

    In a classical arrangement we have on the one hand discrete symbolic and on the other hand continous numerical data attributes. The following evident questions arise: How can fuzzy sets be integrated in this classical schema? Are fuzzy sets discrete and/or continous? Can we measure how discrete, or continous, respectively, an attribute is? We will present the idea that fuzzy sets are continous and... View full abstract»

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  • A hybrid approach to learn recurrent fuzzy systems

    Publication Year: 2003, Page(s):353 - 358
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (559 KB) | HTML iconHTML

    Fuzzy systems, neural networks and its combination in neuro-fuzzy systems are already well established in data analysis and system control. Especially, neuro-fuzzy systems are well suited for the development of interactive data analysis tools, which enable the creation of rule-based knowledge from data and the introduction of a-priori knowledge into the process of data analysis. In this paper we p... View full abstract»

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  • Implementation of a fuzzy logic controller on an FPGA using VHDL

    Publication Year: 2003, Page(s):110 - 115
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (582 KB) | HTML iconHTML

    Implementation of a fuzzy logic controller on an FPGA using VHDL is presented in this paper. The basic components of the fuzzy logic controller are designed using VHDL and a Xilinx virtex FPGA is used for implementation. The fuzzy logic controller with an 8-bit input, 8-bit output is tested by controlling single disk of an ECP torsional plant. View full abstract»

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  • Fuzzy analysis of pharmaceutical effects in vascular dementia

    Publication Year: 2003, Page(s):214 - 217
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (379 KB) | HTML iconHTML

    Large pharmaceutical trials are now underway to assess the effectiveness of cholinesterase drugs in slowing the cognitive decline in vascular dementia. Current trials use probability based statistics in which mean values of cognitive measures are compared between treatment and placebo groups. Several limitations exist in traditional drug study designs that impact patient selection criteria, preclu... View full abstract»

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  • A new two-step fuzzy inference approach based on Takagi-Sugeno inference using discrete type 2 fuzzy sets

    Publication Year: 2003, Page(s):32 - 37
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (547 KB) | HTML iconHTML

    Fuzzy system modeling (FSM) is one of the most prominent tools in order to capture the hidden behavior of highly nonlinear systems with uncertainty. In this paper, a new type 2 FSM approach is proposed in order to increase the predictive power of traditional Takagi-Sugeno fuzzy system models. One of the biggest problems of type 2 fuzzy system models is computational complexity. In order to remedy ... View full abstract»

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  • Dealing with relatively proximity by rough clustering

    Publication Year: 2003, Page(s):260 - 265
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (529 KB) | HTML iconHTML

    This paper presents a new clustering method based on the indiscernibility of objects. It provides good partition to objects even when the proximity of objects is defined as relative proximity. The main benefit of this method is that it can be applied to proximity measures that do not satisfy the triangular inequality. Additionally, it may be used with a proximity matrix-thus it does not require di... View full abstract»

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  • A fuzzy approach for reforming earthquake map

    Publication Year: 2003, Page(s):383 - 388
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (516 KB) | HTML iconHTML

    Due to the complexity of the earthquake systems, it is impossible to produce any acceptable earthquake risk map. This paper suggests a fuzzy approach for reforming earthquake map by the integration of fuzzy set theory, risk analysis and geographical information system(GIS) technology. The implications of the incorporation of fuzzy set methodologies into earthquake map for GIS application are twofo... View full abstract»

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  • Using fuzzy measures to group cycles in metabolic networks

    Publication Year: 2003, Page(s):239 - 243
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (391 KB) | HTML iconHTML

    This paper describes part of a modeling tool, called FCModeler, for exploring metabolic networks that displays and finds structural relationships in graphs. Nodes of the map represent specific biochemicals such as proteins, RNA, and small molecules, or stimuli, such as light, heat, or nutrients. Edges of the map capture regulatory and metabolic relationships found in biological systems. These rela... View full abstract»

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  • About certainty-based queries against possibilistic databases

    Publication Year: 2003, Page(s):161 - 166
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (589 KB) | HTML iconHTML

    This paper is situated in the area of possibilistic relational databases, i.e., where some attribute values are imprecise and represented as possibility distributions. Any such database has a canonical interpretation as a set of regular relational databases, called worlds. This view provides the basic semantics of any query addressed to a possibilistic database. However, a query cannot be run this... View full abstract»

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  • Fuzzy controller for rapid nickel-cadmium batteries charger through adaptive neuro-fuzzy inference system (ANFIS) architecture

    Publication Year: 2003, Page(s):540 - 544
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (709 KB) | HTML iconHTML

    ANFIS architecture is a class of adaptive networks, which is functionally equivalent to fuzzy inference systems. The architecture has been employed for fuzzy modeling that learns information about a data-set in order to compute the membership functions and rule-base that best follow the given input-output data. ANFIS employs hybrid learning that combines the gradient method and the least squares e... View full abstract»

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  • Degree of normality based on fuzzy logic for a diagnostic analysis of signs observed in a human body

    Publication Year: 2003, Page(s):155 - 160
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (434 KB) | HTML iconHTML

    This paper defines normality in human body for diagnostic analysis of signs observed in human body. The normality is a matter of degree. Physician usually examines whether a patient is either normal or abnormal. Diagnosis of human body is usually done by observing biosignals, radiological images, body surface information and others of human body. First, the information granularity of these signs o... View full abstract»

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  • Fault detection and diagnosis in turbine engines using fuzzy logic

    Publication Year: 2003, Page(s):341 - 346
    Cited by:  Papers (8)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (593 KB) | HTML iconHTML

    In this paper, we present a fuzzy logic based method of fault detection and diagnosis in gas turbine engines. The fuzzy logic system rule base is derived using heuristics extracted from designed experiments and flight data representing component performance changes due to field service degradation. The fuzzy logic rule based method incorporates both sensed engine parameters that represent non-dete... View full abstract»

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  • Classification of substation single-line diagrams based on fuzzy systems

    Publication Year: 2003, Page(s):297 - 301
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (417 KB) | HTML iconHTML

    This paper proposes three approaches to classify substation single-line diagrams so it can be used in a power distribution network expansion. With these approaches the expertise shall confront different single-line diagrams, so he can choose the best solution to a given problem. This classification is based on reliability, operational flexibility and impact on the environment criteria of each elec... View full abstract»

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  • Discovering imprecise temporal associations

    Publication Year: 2003, Page(s):99 - 104
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (614 KB) | HTML iconHTML

    This paper examines the discovery of associations defined by fuzzy temporal predicates in time-tagged information from multiple distributed data sources. The use of fuzzy predicates provides the ability to represent and analyze imprecise temporal relation-ships, including temporal ordering and duration. In particular, we are concerned with the adaptability of common data mining strategies to relat... View full abstract»

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  • Fuzzy oscillometric blood pressure classification

    Publication Year: 2003, Page(s):208 - 213
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (503 KB) | HTML iconHTML

    Classification of systolic, mean and diastolic blood pressure profiles using the oscillometric method is a difficult process. Generally, the algorithms aim at extracting some parameters such as height, and ratios of the pulses at certain pressure levels, which are obtained from the cuff pressure. These parameters can be used to form profiles to relate to blood pressures. The effectiveness of the c... View full abstract»

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  • Multi-objective geometric programming with T-fuzzy variables

    Publication Year: 2003, Page(s):456 - 461
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (470 KB) | HTML iconHTML

    On the introduction of the definition and properties of the variables, T-fuzzy variables are drawn into a geometric programming model before a multi-objective geometric programming with the variables is built. The programming is determined on the condition that the variables are handled in a non-fuzzification way. Besides the programming is changed into an ordinary geometric programming dependent ... View full abstract»

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  • A new method for fuzzy inference in intuitionistic fuzzy systems

    Publication Year: 2003, Page(s):20 - 25
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (530 KB) | HTML iconHTML

    We describe in this paper a proposed new approach for fuzzy inference in intuitionistic fuzzy systems. The new approach combines the outputs of two traditional fuzzy systems to obtain the final conclusion of the intuitionistic fuzzy system. The new method provides an efficient way of calculating the output of an intuitionistic fuzzy system, and as consequence can be applied to real-world problems ... View full abstract»

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  • Fuzzy ideals in BCH-algebras

    Publication Year: 2003, Page(s):254 - 259
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (417 KB) | HTML iconHTML

    Fuzzy ideals were discussed in BCK/BCI-algebras, but in BCH-algebras. In this paper we introduce notions of fuzzy ideals in BCH-algebras and discuss their properties in BCH-algebras. View full abstract»

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  • Determination of properties of composite materials from the Lamb wave propagation: probabilistic, interval, and fuzzy approaches

    Publication Year: 2003, Page(s):420 - 425
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB) | HTML iconHTML

    One of the most efficient non-destructive techniques for finding hidden faults in a plate is the use of ultrasonic Lamb waves. These waves are reflected by faults, and from this reflection, we can locate the faults. For that, we need to know how the Lamb waves propagate. Their propagation is determined by the dynamic elastic constants C'pq, so we must find these constants. These constan... View full abstract»

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  • Evolving fuzzy controllers through evolutionary programming

    Publication Year: 2003, Page(s):50 - 54
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (447 KB) | HTML iconHTML

    Fuzzy logic controllers have been proven to be an effective means of solving real world control issues. One of the difficulties in the construction of fuzzy controllers is the design of the rule base under which they operate. This paper investigates the application of evolutionary programming as an iterative learning process for the fuzzy rule base. This approach is applied to the problem of an el... View full abstract»

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  • Information matrix and image compression

    Publication Year: 2003, Page(s):132 - 137
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (501 KB) | HTML iconHTML

    In this paper, we introduce a new fuzzy technique, information matrix, to compress images. With high compression speed, this fuzzy technique has compression ratio more than 50% for any original image and the reconstructed image quality is good, although not exactly as the same as the original image. In this paper we give two examples to show the compression ratio and the reconstructed image qualit... View full abstract»

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  • The use of fuzzy measures as a data fusion tool in geographic information systems: case study

    Publication Year: 2003, Page(s):365 - 370
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB) | HTML iconHTML

    Geospatial databases generally consist of measurements related to points (or pixels in the case of raster data), lines, and polygons. In recent years, the size and complexity of these databases have increased significantly and they often contain duplicate records, i.e., two or more close records representing the same measurement result. In this paper, we use fuzzy measures to address the problem o... View full abstract»

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