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    Wyświetlanie 1-11 z 11
    Tytuł:
    Computing with words, protoforms and linguistic data summaries : towards a novel natural language based data mining and knowledge discovery tools
    Autorzy:
    Kacprzyk, J.
    Zadrożny, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/384773.pdf
    Data publikacji:
    2014
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    computing with words
    linguistic summaries
    protoform
    Opis:
    We show how Zadeh’s idea of computing with words and perceptions, based on his concept of a precisiated natural language (PNL), can lead to a new direction in the use of natural language in data mining, linguistic data(base) summaries. We emphasize the relevance of Zadeh’s another idea, that of a protoform, and show that various types of Yager type linguistic data summaries may be viewed as items in a hierarchy of protoforms of summaries. We briefly present an implementation for a sales database of a computer retailer as a convincing example that these tools and techniques are implementable and functional. These summaries involve both data from an internal database of the company and data downloaded from external databases via the Internet.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2014, 8, 3; 52-58
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Imposing Restrictions on Density Functions Utilised in Computing With Words
    Autorzy:
    Gemeinder, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/908038.pdf
    Data publikacji:
    2002
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    informatyka
    computing with words
    approximate reasoning
    resemblance
    Opis:
    Applying the generalised extension principle within the area of Computing with Words typically leads to complex maximisation problems. If distributed quantities--such as, e.g., size distributions within human populations--are considered, density functions representing these distributions become involved. Very often the optimising density functions do not resemble those found in nature; for instance, an optimising density function could consist of two single Dirac pulses positioned near the opposite bounds of the interval limiting the possible values of the quantity considered. Therefore, in this article, density functions with certain shapes which enable us to overcome this lack of resemblance are considered. Furthermore, some considerations on solving the resulting maximisation problems are reported.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2002, 12, 3; 383-390
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and Evaluation Analysis of the Indicator Information in Nuclear Safeguards Applications by Computing With Words
    Autorzy:
    Liu, J.
    Ruan, D.
    Carchon, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/908042.pdf
    Data publikacji:
    2002
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    fizyka
    safeguards
    computing with words
    decision-making
    physical model
    Opis:
    This paper aims at the handling and treatment of nuclear safeguard relevant information by using a linguistic assessment approach. This is based on a hierarchical analysis of a State's nuclear activities in a multi-layer structure of the evaluation model. After a hierarchical analysis of the State's nuclear activities on the basis of the IAEA Physical Model, the addressed objective is divided into several less complex levels. The overall evaluation can be obtained step by step from those lower levels. Special emphasis is put on the synthesis and evaluation analysis of the Physical Model indicator information. Accordingly, the aggregation process with the consideration of the different kinds of qualitative criteria is in focus. Especially, the symbolic approach is considered by the direct computation on linguistic values instead of the approximation approach using the associated membership function. In this framework, several kinds of ordinal linguistic aggregation operators are presented and analyzed. The application of these linguistic aggregation operators to the combination of the Physical Model indicator information is provided. An example is given to support and clarify the mathematical formalism.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2002, 12, 3; 449-462
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computing with words with the use of inverse RDM models of membership functions
    Autorzy:
    Piegat, A.
    Pluciński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/330406.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    computing with words
    fuzzy arithmetic
    RDM fuzzy arithmetic
    granular computing
    Opis:
    Computing with words is a way to artificial, human-like thinking. The paper shows some new possibilities of solving difficult problems of computing with words which are offered by relative-distance-measure RDM models of fuzzy membership functions. Such models are based on RDM interval arithmetic. The way of calculation with words was shown using a specific problem of flight delay formulated by Lotfi Zadeh. The problem seems easy at first sight, but according to the authors’ knowledge it has not been solved yet. Results produced with the achieved solution were tested. The investigations also showed that computing with words sometimes offers possibilities of achieving better problem solutions than with the human mind.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2015, 25, 3; 675-688
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computing With Words and Life Data
    Autorzy:
    Grzegorzewski, P.
    Hryniewicz, O
    Powiązania:
    https://bibliotekanauki.pl/articles/908012.pdf
    Data publikacji:
    2002
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    computing with words
    life data
    vague data
    estimation
    hypotheses testing
    Opis:
    The problem of statistical inference on the mean lifetime in the presence of vague data is considered. Situations with fuzzy lifetimes and an imprecise number of failures are discussed.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2002, 12, 3; 337-345
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Communication among agents: a set theoretic approach
    Autorzy:
    Mousavi, Amin
    Jabedar-Maralani, Parviz
    Powiązania:
    https://bibliotekanauki.pl/articles/2012710.pdf
    Data publikacji:
    2003
    Wydawca:
    Politechnika Gdańska
    Tematy:
    computing with words
    granular computing
    fuzzy sets
    rough sets
    multi-valued logic
    Opis:
    This paper uses the notion of relative sets in relation to fuzzy set theory to provide a mathematical framework to analyze communication among agents. Each relative set partitions all objects into four distinct regions corresponding to four truth-values of Belnap’s logic. Two orderings on relative sets are considered; one is an extension of the classical set inclusion ordering while the other is a new ordering of knowledge or information. According to these orderings, we can divide set theoretic problems into two major categories: reasoning problems and communicating problems. In the first category, an agent tries to extract a sound decision through granular reasoning. In this case, a granule represents a concept or a word. In the second category, each granule relates to an agent, and the problem is to compare agents’ knowledge about concepts by their related granules, e.g. a knowledge reduction problem. Then, we concentrate on the second category of problems and try to investigate this kind of problems in the context of fuzzy set theory. In this way, we could provide a basis for modeling and analyzing the relations among machines, which could communicate with each other using words and granules.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2003, 7, 1; 53-64
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An Architecture for Making Judgments Using Computing With Words
    Autorzy:
    Mendel, J. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/908008.pdf
    Data publikacji:
    2002
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    informatyka
    computing with words
    footprint of uncertainty
    perceptual computer
    type-2 fuzzy logic system
    judgments
    Opis:
    Our thesis is that computing with words needs to account for the uncertainties associated with the meanings of words, and that these uncertainties require using type-2 fuzzy sets. Doing this leads to a proposed architecture for making judgments by means of computing with words, i.e., to a perceptual computer - the Per-C. The Per-C includes an encoder, a type-2 rule-based fuzzy logic system, and a decoder. It lets all human-computer interactions be performed using words. In this paper, a quantitative language is established for the Per-C, and many open issues about the perceptual computer are described.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2002, 12, 3; 325-335
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Methods for building a knowledge base for automatic communication in shipping
    Autorzy:
    Wójcik, A.
    Pietrzykowski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/135134.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    e-navigation
    automation of communication processes
    knowledge base
    inference rules
    classical predicate calculus
    computing with words
    Opis:
    One of the most significant phases for automation of communication processes in shipping is building a knowledge base for inference processes. Communication processes include: exchange of information, perception of communication and interaction between navigators. Computing with words has been used to represent inference processes covering imprecise concepts that are characteristic of natural languages. Elements of classical predicate calculus were adopted as a basic form of writing inference rules. Methods for constructing a knowledge base were chosen. The knowledge base architecture was proposed. This article also presents examples of inference rules in a knowledge base for automatic communication in shipping.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 47 (119); 176-180
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modeling communication processes in maritime transport using computing with words
    Autorzy:
    Wójcik, A.
    Hatłas, P.
    Pietrzykowski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/393816.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Stowarzyszenie Telematyki Transportu
    Tematy:
    automatic communication
    inference rules
    computing with words
    e-navigation
    komunikacja automatyczna
    reguły wnioskowania
    podsumowanie lingwistyczne
    e-nawigacja
    Opis:
    The paper deals with communication processes between ship navigators based on standard marine communication phrases. The authors consider information exchange, message perception and interactions, e.g. negotiations. For this purpose navigational information and communication ontologies have been complemented by elements of the protoform theory. The considerations include inference processes, related to additional information acquisition and negotiations. Computing with words is applied to the modelling of communication processes.
    Źródło:
    Archives of Transport System Telematics; 2016, 9, 4; 47-51
    1899-8208
    Pojawia się w:
    Archives of Transport System Telematics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Fuzzy Logic Based Approach to Linguistic Summaries of Databases
    Autorzy:
    Kacprzyk, J.
    Yager, R. R.
    Zadrożny, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/911154.pdf
    Data publikacji:
    2000
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    logika rozmyta
    baza danych
    podsumowanie lingwistyczne
    zgłębianie danych
    fuzzy logic
    linguistic summary
    computing with words
    data mining
    fuzzy querying
    Opis:
    In this paper, we present basic ideas and perspectives related to the use of fuzzy logic for the derivation of linguistic summaries of data (databases). We concentrate on the issue of how to measure the goodness of a linguistic summary, and on how to embed data summarization within the fuzzy querying environment, for an effective and efficient implementation. In particular, we propose how to efficiently implement Kacprzyk and Yager's (2000) new quality indicators of linguistic summaries to derive summaries via Kacprzyk and Zadrozny's (1994; 1995a; 1995b; 1996) fuzzy querying add-on. Finally, we present an implementation for deriving linguistic summaries of a sales database at a computer retailer, and show how the linguistic summaries obtained can be useful for supporting decisions of the business owner.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2000, 10, 4; 813-834
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fuzzy-Arithmetic-Based Lyapunov Synthesis in the Design of Stable Fuzzy Controllers: a Computing-With-Words Approach
    Autorzy:
    Zhou, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/908020.pdf
    Data publikacji:
    2002
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    informatyka
    fuzzy control
    standard fuzzy arithmetic
    constrained fuzzy arithmetic
    Lyapunov synthesis
    stability
    computing with words
    perception-based information
    pole balancing mobile robot
    Opis:
    A novel approach to designing stable fuzzy controllers with perception-based information using fuzzy-arithmetic-based Lyapunov synthesis in the frame of computing with words (CW) is presented. It is shown that a set of conventional fuzzy control rules can be derived from the perception-based information using the standard-fuzzy-arithmetic-based Lyapunov synthesis approach. On the other hand, a singleton fuzzy controller can be devised by using a constrained-fuzzy-arithmetic-based Lyapunov synthesis approach. Furthermore, the stability of the fuzzy controllers can be guaranteed by means of the fuzzy version of Lyapunov stability analysis. Moreover, by introducing standard and constrained fuzzy arithmetic in CW, the "words" represented by fuzzy numbers could be efficiently manipulated to design fuzzy controllers. The results obtained are illustrated with the design of stable fuzzy controllers for an autonomous pole balancing mobile robot.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2002, 12, 3; 411-421
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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