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NAFIPS 2007 - 2007 Annual Meeting of the North American Fuzzy Information Processing Society

Date 24-27 June 2007

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Displaying Results 1 - 25 of 127
  • [Front cover]

    Publication Year: 2007, Page(s): C1
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  • [Breaker page]

    Publication Year: 2007, Page(s): 1
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  • Table of contents

    Publication Year: 2007, Page(s):iii - x
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  • [Opinion]

    Publication Year: 2007, Page(s): xii
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  • [Opinion]

    Publication Year: 2007, Page(s): xiii
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  • [Opinion]

    Publication Year: 2007, Page(s): xi
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  • A Fuzzy Inverse Model Construction Method for a General MISO System with a Monotonic Input-output Relationship

    Publication Year: 2007, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB) | HTML iconHTML

    This paper presents a novel method of systematically constructing the fuzzy inverse model for a general multi-input single-output (MISO) system represented with triangular input membership functions, singleton output membership function and fuzzy-mean defuzzification. The fuzzy inverse model construction method has the ability of uniquely determining the inverse relationship for each input-output ... View full abstract»

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  • Visualization of Item Features, Customer Preference and Associated Uncertainty using Fuzzy Sets

    Publication Year: 2007, Page(s):7 - 12
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (760 KB) | HTML iconHTML

    Some of the requirements during preferences discovery or preference modeling through machine learning and data mining are: (i) understanding of features of items, e.g. genres content of a movie; (ii) understanding of patterns in customer feedback on items to explore and identify customer preferences; (iii) understanding of discovered patterns in customer preference on features of items, e.g. prefe... View full abstract»

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  • EHSS Velocity Control by Fuzzy Neural Networks

    Publication Year: 2007, Page(s):13 - 18
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (555 KB) | HTML iconHTML

    In this paper a fuzzy neural network (FNN) is presented for velocity control of an electro hydraulic servo system (EHSS) in presence of flow nonlinearties and internal friction. The system contains several major nonlinearties that limit the ability of simple controllers in achieving satisfactory performance. These nonlinearties include: valve dead zones, valve flow saturation, and cylinder seal fr... View full abstract»

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  • Modern Data Visualization for Air Traffic Management

    Publication Year: 2007, Page(s):19 - 24
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (787 KB) | HTML iconHTML

    Air traffic at airports is affected by various factors. The capacity of an airport and the demand at a certain point in time are serious parameters that account for a big extent to aircraft delay and related variables. It has been proven that weather is another important impact in this regard. Although weather cannot be controlled, the knowledge of how weather affects the air traffic at an airport... View full abstract»

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  • Clustering without Use of Prototypes with Gradient Descent for Cluster Optimization

    Publication Year: 2007, Page(s):25 - 30
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (275 KB) | HTML iconHTML

    The first stage of organizing entities is to partition them into groups or clusters. The clustering is generally done on pattern vectors representing the entities. Clustering algorithms normally require a method of aggregating patterns and of measuring proximity between patterns. Because of the nature of the patterns it may not always be possible however to find a satisfactory method of aggregatin... View full abstract»

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  • Using Consensus to Measure Weighted Targeted Agreement

    Publication Year: 2007, Page(s):31 - 35
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB) | HTML iconHTML

    The information-theoretic measures of consensus, dissent and agreement are used to address the problem of the assignment of weights in recognition of expert opinions, and interval weights to reflect categorical weights. All measures are bounded in the 0 to 1 interval. Dissent is also interpreted as an indicator of dispersion. Thus, the values selected by a panel of experts is calculated for each t... View full abstract»

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  • Fuzzy PID Supervision for a Nonlinear, System: Design and Implementation

    Publication Year: 2007, Page(s):36 - 41
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4472 KB) | HTML iconHTML

    This paper presents an approach to design fuzzy supervisor for PID controllers used in the control of nonlinear systems. In the proposed approach, the design is based on an output performance criterion, namely a response with minimum settling time and without overshoot, whatever the operation conditions may be. The application used for a demonstration is a three-tank-system where the connection be... View full abstract»

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  • A Novel Granular Neural Network Architecture

    Publication Year: 2007, Page(s):42 - 47
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (295 KB) | HTML iconHTML

    We introduce a novel granular neural network (GNN) architecture based on the multi-layer perceptron architecture. The GNN uses linguistic terms as connection weights, and uses the operations of linguistic arithmetic to update those connection weights. The GNN has been implemented in a Java-based simulation environment, with support for both regression and classification learning tasks. We present ... View full abstract»

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  • ECG Arrhythmia Detection Using Fuzzy Classifiers

    Publication Year: 2007, Page(s):48 - 53
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB) | HTML iconHTML

    An electrocardiogram (ECG) arrhythmia detection system has been developed. Piecewise continuous trapezoidal fuzzy membership functions and defuzzification schemes have been designed to be used in a fuzzy classifier. Fourteen types of arrhythmias and abnormalities can be detected implementing the classifier. We have evaluated the algorithm on MIT-BIH database. The classifier achieved a sensitivity ... View full abstract»

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  • Relevance Feedback for Association Rules using Fuzzy Score Aggregation

    Publication Year: 2007, Page(s):54 - 59
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (238 KB) | HTML iconHTML

    We propose a novel and more flexible relevance feedback for association rules which is based on a fuzzy notion of relevance. Our approach transforms association rules into a vector-based representation using some inspiration from document vectors in information retrieval. These vectors are used as the basis for a relevance feedback approach which builds a knowledge base of rules previously rated a... View full abstract»

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  • Fuzzy Parking Manoeuvres of Wheeled Mobile Robots

    Publication Year: 2007, Page(s):60 - 65
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB) | HTML iconHTML

    This work deals with the parking manoeuvres problem for a wheeled mobile robot (WMR). The robot has the same non-holonomic kinematic constraint that has a car vehicle. This constraint makes the robot having its direction always tangent to the trajectory. Two sub-cases of parking problems are considered. These are forward and backward maneuvers, aiming to stabilize the robot at a pre-specified pose... View full abstract»

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  • Fuzzy Clustering of Baseball Statistics

    Publication Year: 2007, Page(s):66 - 68
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (298 KB) | HTML iconHTML

    A previous investigation into the ability of fuzzy clustering to be a sound method for comparing Major League Baseball players' batting averages yielded promising results. Yet, the study involved a rather small sample of 90 batting averages, which were fuzzy clustered into three categories. Furthermore, the primary study focused on batting averages, a statistic that is incapable of reflecting a pl... View full abstract»

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  • Applying Novel Resampling Strategies To Software Defect Prediction

    Publication Year: 2007, Page(s):69 - 72
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (267 KB) | HTML iconHTML

    Due to the tremendous complexity and sophistication of software, improving software reliability is an enormously difficult task. We study the software defect prediction problem, which focuses on predicting which modules will experience a failure during operation. Numerous studies have applied machine learning to software defect prediction; however, skewness in defect-prediction datasets usually un... View full abstract»

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  • A Methodology for Statistical Matching with Fuzzy Logic

    Publication Year: 2007, Page(s):73 - 78
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB) | HTML iconHTML

    The Analysis of data often requires information that is not available from a single source, but from multiple sources. Statistical matching procedures are methods that help to merge information from different sources into a single data set. Traditionally, statistical matching is done on the basis of computed distances between selected variables found in all data sets. Situations where no decision ... View full abstract»

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  • Ontology-based Fuzzy Inference Agent for Diabetes Classification

    Publication Year: 2007, Page(s):79 - 83
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2582 KB) | HTML iconHTML

    Diabetes is a chronic illness that requires continuing medical care and patient self-management to prevent acute complications and to reduce the risk of long-term complications. This paper presents an ontology-based fuzzy inference agent, including a fuzzy inference engine, and a fuzzy rule base, for diabetes classification. The diabetes disease dataset used in our study is retrieved from the UCI ... View full abstract»

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  • Conceptualized Query for Information Retrieval

    Publication Year: 2007, Page(s):84 - 88
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB) | HTML iconHTML

    Many search engines are term-based information retrieval models. The disadvantage of this type of model is that it does not consider word sense. If we can represent the meanings of the terms that a user inputs, the IR system can retrieve the information the user really wants; not simply match the terms. To represent word sense, we proposed conceptual fuzzy sets (CFSs). A CFS is a framework that re... View full abstract»

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  • About the Division Operator in a Possibilistic Database Framework

    Publication Year: 2007, Page(s):89 - 94
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2872 KB) | HTML iconHTML

    This paper is situated in the area of possibilistic databases. Any possibilistic database has a canonical interpretation as a set of more or less possible regular databases, also called worlds. In order to manipulate such databases in a safe and efficient way, a constrained framework has been previously proposed, where a restricted number of querying operations are permitted (selection, union, pro... View full abstract»

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  • An Agent Model for the Control of Smart Appliances

    Publication Year: 2007, Page(s):95 - 99
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (415 KB) | HTML iconHTML

    This paper proposed an agent model for the control of smart appliances. A smart appliance here refers to a home appliance with limited computation and network capabilities that can communicate with other network devices. The simple control protocol (SCP) technology was used to connect smart appliances over power lines to provide agents with an integrated network environment. The proposed agent mod... View full abstract»

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  • Control Performance Comparison between a Type-2 Fuzzy Controller and a Comparable Conventional Mamdani Fuzzy Controller

    Publication Year: 2007, Page(s):100 - 105
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB) | HTML iconHTML

    Control performance comparison between a type-1 fuzzy controller (Tl-FC) and a comparable type-2 fuzzy controller (T2-FC) was carried out using computer simulation. Our objective was to study whether T2 fuzzy control always had a control performance advantage over its Tl counterpart as claimed in some simulation-based reports. We used a genetic algorithm to optimize the Tl-FC and the T2-FCs that c... View full abstract»

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