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Fuzzy Information Processing Society (NAFIPS), 2012 Annual Meeting of the North American

Date 6-8 Aug. 2012

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Displaying Results 1 - 25 of 112
  • 2012 Annual Meeting of the North American Fuzzy Information Processing Society [Front cover]

    Publication Year: 2012, Page(s): c1
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  • 2012 Annual Meeting of the North American Fuzzy Information Processing Society [Copyright notice]

    Publication Year: 2012, Page(s): 1
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  • Special thank you to our sponsor

    Publication Year: 2012, Page(s): 1
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  • Papers

    Publication Year: 2012, Page(s):1 - 8
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  • Administration and committees

    Publication Year: 2012, Page(s):1 - 3
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  • Message from NAFIPS general chairs

    Publication Year: 2012, Page(s): 1
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  • Message from NAFIPS 2012 program chairs

    Publication Year: 2012, Page(s):1 - 2
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  • [Abstracts for six special sessions]

    Publication Year: 2012, Page(s):1 - 3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (88 KB)

    Summary form only given. Provides an abstract for each of the six tutorial presentations and a brief professional biography of each presenter. View full abstract»

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  • Author

    Publication Year: 2012, Page(s):1 - 8
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  • Fuzzy calculus via extension of the derivative and integral operators and fuzzy differential equations

    Publication Year: 2012, Page(s):1 - 5
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB) | HTML iconHTML

    We define the concepts of derivative and integral of fuzzy functions using the extension principle of Zadeh on the corresponding classical operators. Here are some of its properties and we articulate a version of the Fundamental Theorem of Calculus for fuzzy functions and ensure the existence of a solution of fuzzy initial value problem under certain conditions. A method of solving fuzzy initial v... View full abstract»

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  • Some comments on excluded middle and contradiction laws as limit values in fuzzy logic

    Publication Year: 2012, Page(s):1 - 5
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (751 KB) | HTML iconHTML

    This paper presents some results about the laws of excluded middle and contradiction of classical logic in fuzzy logic because in the latter, in general, are not satisfied. The aim is to present conditions under which these two laws as limit values are met with the correct choice of the fuzzy logical connectors. View full abstract»

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  • Contributions of fuzzy logic and bounded rationality to cognitive machines in organizations

    Publication Year: 2012, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (114 KB) | HTML iconHTML

    This research is about cognitive machines in organizations which has been influenced by the scientific works of Herbert A. Simon on Administrative Behavior and Bounded Rationality, and Lotfi A. Zadeh on Fuzzy Systems and Computational Theory of Perceptions, developed in the period between the middle and the end of the 20th century. It contributes with the unification of theories and results of the... View full abstract»

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  • A technique for deriving analytical structure of a general class of interval type-2 TS fuzzy controllers

    Publication Year: 2012, Page(s):1 - 6
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1625 KB) | HTML iconHTML

    Type-2 (T2) fuzzy controllers have been widely treated as black boxes in that their input-output mathematical relationships (i.e., analytical structures) are unknown. In contrast, any conventional controller's analytical structure is always known. Revealing the analytical structure is important as it will lay a solid foundation for better understanding, more insightful analysis, and more effective... View full abstract»

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  • Crisp and fuzzy cluster validity: Generalized intra-inter silhouette index

    Publication Year: 2012, Page(s):1 - 6
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1038 KB) | HTML iconHTML

    Based on a framework, that casts the problem of clustering a set of data points as a problem of clustering the associated pairwise distances, this study generalizes the silhouette measure to fuzzy partitions, in turn, proposing an outstanding tool to the validation of crisp and fuzzy clustering results. View full abstract»

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  • A fuzzy linear regression model for interval type-2 fuzzy sets

    Publication Year: 2012, Page(s):1 - 5
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1502 KB) | HTML iconHTML

    This paper presents a regression model for interval type-2 fuzzy sets based on the least squares estimation technique. Unknown coefficients are assumed to be triangular fuzzy numbers. The basic idea is to determine aggregation intervals for type-1 fuzzy sets, membership functions of whose are low membership function and upper membership function of interval type-2 fuzzy set. These aggregation inte... View full abstract»

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  • A hybrid approach to develop an interval type-2 fuzzy logic system

    Publication Year: 2012, Page(s):1 - 5
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (667 KB) | HTML iconHTML

    After more than three decades since the introduction of linguistic variables and their application to approximate reasoning by Zadeh [1], the ability of fuzzy logic systems (FLSs) for modeling real world applications is not a secret to anyone. Currently there are two basic approaches to determine fuzzy model of a system in the literature which are, 1-direct approach, and 2-indirect approach. In di... View full abstract»

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  • A fuzzy multi-criteria approach for evaluating biofuels feedstocks

    Publication Year: 2012, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (717 KB) | HTML iconHTML

    In this paper, we develop a fuzzy holistic approach evaluating the conventional and advanced biofuels feedstocks in meeting multiple economic, environmental and social criteria of the biofuels policies and capturing the uncertainties of policy evaluation and design processes. We use a multi-criteria approach PROMETHEE (Preference Ranking Organization METHod for Enrichment Evaluations) and fuzzy se... View full abstract»

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  • Type-2 fuzzy rule base system with parameter optimization for forecasting of tardiness

    Publication Year: 2012, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (821 KB) | HTML iconHTML

    This paper addresses an interval type-2 fuzzy hybrid rule-based system in order to predict the amount of tardiness where tardiness variables are represented by interval type-2 membership functions. For this purpose, interval type-2 fuzzy disjunctive normal forms and fuzzy conjunctive normal forms are utilized in the inference engine. The main contribution of this paper is to present the interval t... View full abstract»

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  • Powers of indistinguishability operators

    Publication Year: 2012, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (699 KB) | HTML iconHTML

    The application of a t-norm more than one time to the same object can be seen as the modelization of a semantic reinforcement of it. From a mathematical viewpoint, this operation can be seen as powers. Depending on the properties the t-norm fulfills several interesting properties emerge. This work will study what is the effect of the application of powers to indistinguishability operators, sets of... View full abstract»

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  • Coordinated control of circulating fluidized bed boiler based on the fuzzy PID control

    Publication Year: 2012, Page(s):1 - 7
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1167 KB) | HTML iconHTML

    In this paper, a new sequential relay feedback method for the tuning of decentralized PID controllers in intelligent coordinated control systems (CCS). Based on the specified phase and gain margin, the parameters of the fuzzy self-adjusting PID controllers and the fuzzy gain scheduling PID controllers are determined. The scheme is implemented through the function code in typical DCSs (EDPF-NT, XDP... View full abstract»

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  • Conjectures in De Morgan algebras

    Publication Year: 2012, Page(s):1 - 6
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB) | HTML iconHTML

    This paper is devoted to cover a lack existing since the first paper of one of the authors on `conjectures' in the setting of ortholattices was published in 1999: the case with De Morgan algebras, and fuzzy sets once endowed with the algebra given by the triplet (min, max, 1-id). View full abstract»

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  • A new computational fuzzy time series model to forecast number of outpatient visits

    Publication Year: 2012, Page(s):1 - 6
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (200 KB) | HTML iconHTML

    Forecasting number of outpatient visits is pre-eminent for patient planning, medical resource utilization and overall management of health care system to a certain extent. Aim of forecasting the outpatient visits can also be seemed in terms of individual care. In addition, accurate prediction of outpatient visits in hospitals can play a significant role in health insurance plans and for deciding r... View full abstract»

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  • Dynamical construction of binary relations in coreference detection

    Publication Year: 2012, Page(s):1 - 6
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1057 KB) | HTML iconHTML

    Modern database systems allow to describe information from the real world in a well structured manner. Unfortunately, many databases cope with quality problems. One of these problems is the existence of coreferent data, which means that the same real world entity is described multiple times within one database. Due to errors, inaccuracies and lack of standardization, coreferent data are not bound ... View full abstract»

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  • A fast learning algorithm for uninorm-based fuzzy neural networks

    Publication Year: 2012, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (551 KB) | HTML iconHTML

    This paper suggests a fast learning algorithm for weighted uninorm-based neural networks. Fuzzy neural networks are models capable to approximate functions with high accuracy and to generate transparent models through extraction of linguistic information from the resulting topology. A fuzzy neural network model based on weighted uninorms has been developed recently. It was shown that this model ap... View full abstract»

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  • Simulation of language evolution using Fuzzy Grammars

    Publication Year: 2012, Page(s):1 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (591 KB) | HTML iconHTML

    Many computer simulations try to explain language evolution with socially oriented scenarios in multi-agent systems by applying methods such as genetic algorithms and neural networks. In this paper a new approach based on modifications to the classic Ant Colony Optimization algorithm is proposed. Ants are provided with a Fuzzy Grammar and the ability to embed a message in the pheromone. By fuzzify... View full abstract»

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