Xem 1-20 trên 27 kết quả Fuzzy sets
  • Để nâng cao hiệu quả của các công trình thuỷ lợi cần phải đánh giá hiệu quả tưới của hệ thống thủy lợi được quản lý bằng các mô hình quản lý khác nhau, tìm ra các điểm mạnh, điểm yếu, từ đó đề xuất các giải pháp hoàn thiện các mô hình quản lý tưới.

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  • Evolution of global technologies has prompted increasing complexity of applications developed in both, the industry and the scientific research fields. These complexities are generally attributed to nonlinearities, poorly defined dynamics and absence of apriori information about the systems. Imprecision, uncertainties and vagueness in information about the system are also playing vital roles in enhancing the complexity of application.

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  • The Fuzzy Set Theory developed by L. Zadeh (Zadeh 1965) as a possible way to handle uncertainty is particularly useful for the representation of vague expert knowledge and processing uncertain or imprecise information. The Fuzzy Set Theory is based on an extension of the classical meaning of the term "set" and formulates specific logical and arithmetical operations for processing information defined in the form of fuzzy sets and fuzzy rules.

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Classification of rhythmic locomotor patterns in electromyographic signals using fuzzy sets

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  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Linear Motion Blur Parameter Estimation in Noisy Images Using Fuzzy Sets and Power Spectrum

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  • Coreferencing entities across documents in a large corpus enables advanced document understanding tasks such as question answering. This paper presents a novel cross document coreference approach that leverages the profiles of entities which are constructed by using information extraction tools and reconciled by using a within-document coreference module. We propose to match the profiles by using a learned ensemble distance function comprised of a suite of similarity specialists.

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  • Since the idea of the fuzzy set was proposed in 1965, many developments have occurred in this area. Applications have been made in such diverse areas as medicine, engineering, management, behavioral science, just to mention some. The application of the fuzzy sets involves different technologies, such as fuzzy clustering on image processing, classification, identification and fault detection, fuzzy controllers to map expert knowledge into control systems, fuzzy modeling combining expert knowledge, fuzzy optimization to solve design problems....

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  • Fuzzy control is a practical alternative for a variety of challenging control applications since it provides a convenient method for constructing nonlinear controllers via the use of heuristic information. Such heuristic information may come from an operator who has acted as a “human-in-the-loop” controller for a process. In the fuzzy control design methodology, we ask this operator to write down a set of rules on how to control the process, then we incorporate these into a fuzzy controller that emulates the decision-making process of the human.

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  • Many of the tasks required for semantic tagging of phrases and texts rely on a list of words annotated with some semantic features. We present a method for extracting sentiment-bearing adjectives from WordNet using the Sentiment Tag Extraction Program (STEP). We did 58 STEP runs on unique non-intersecting seed lists drawn from manually annotated list of positive and negative adjectives and evaluated the results against other manually annotated lists. The 58 runs were then collapsed into a single set of 7, 813 unique words. ...

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  • “Book/Definitions” Electrical Engineering Dictionary. Ed. Phillip A. Laplante Boca Raton: CRC Press LLC, 2000 Special Symbols α-level set a crisp set of elements belonging to a fuzzy set A at least to a degree α Aα = {x ∈ X | µA (x) ≥ α} See also crisp set, fuzzy set. f hertz. common symbol for bandwidth, in µ0 common symbol for permeability of free space constant. µ0 = 1.257 × 10−16 henrys/meter. common symbol for relative permeµr ability. ω common symbol for radian frequency in radians/second. ω = 2 · π · frequency....

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  • Chương cung cấp phần mở đầu về tập mờ, quan hệ mờ, và các toán tử trong tập mờ. Để hiểu rõ thêm, tìm đọc (Klir and Folger, 1988; Zimmermann, 1996; Klir and Yuan, 1995). Zadeh (1965) giới thiệu lý thuyết về tập mờ như một chuyên ngành toán học, cho dù các ý tưởng này đã được nhiều nhà luận lý và triết gia thừa nhận (Pierce, Russel, Łukasiewicz,v.v,..).

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  • Cluster Analysis is a technique for classifying data, i.e to divide the given data into a set of classes or clusters.

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  • In design of a flexible manufacturing system (FMS), different combinations of scheduling rules can be applied to its simulation model. Each combination satisfies a very limited number of performance measures (PM). Evaluation of scheduling rules is an inevitable task for any scheduler.

    pdf1p nguyen3 13-11-2009 102 31   Download

  • Special Symbols α-level set a crisp set of elements belonging to a fuzzy set A at least to a degree α Aα = {x ∈ X | µA (x) ≥ α} See also crisp set, fuzzy set. f hertz. common symbol for bandwidth, in µ0 common symbol for permeability of free space constant. µ0 = 1.257 × 10−16 henrys/meter. common symbol for relative permeµr ability. ω common symbol for radian frequency in radians/second. ω = 2 · π · frequency. common symbol for positive transition θ+ angle in degrees. common symbol for negative transiθ− tion angle in degrees. common symbol for conduction...

    pdf751p chuhop 23-09-2010 71 23   Download

  • Algorithm is used to define the notion of decidability. It is a set of rules that precisely defines a sequence of operations. This is essential for computers to process information. Computer programs contain algorithms that detail specific instructions a computer should perform to carry out a specified task. The traditional computer program performs specific instructions sequentially, and uses crisp values of information which do not support uncertainties.

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  • Monitoring and diagnosis play an important role in modern manufacturing engineering. They help to detect product defects and process/system malfunctions early, and hence, eliminate costly consequences.

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  • In design of a flexible manufacturing system (FMS), different combinations of scheduling rules can be applied to its simulation model. Each combination satisfies a very limited number of performance measures (PM). Evaluation of scheduling rules is an inevitable task for any scheduler. This chapter explains a framework for evaluation of scheduling using pair-wise comparison multi-criterion decision-making techniques and fuzzy set theory.

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  • Khi đối mặt với một vấn đề kiểm soát cho một quá trình vật lý phức tạp, một Kiểm soát kỹ sư thường sau một quy trình thiết kế tương đối có hệ thống. Một đơn giản ví dụ về một vấn đề kiểm soát ô tô là một "hành trình điều khiển" mà cung cấp ô tô với khả năng điều chỉnh tốc độ riêng của mình tại một trình điều khiển, quy định set-point (e.g., 55 mph).

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  • A hybrid neural fuzzy system is proposed to monitor both process mean and variance shifts simultaneously. One of the major components of the proposed system is composed of several feedforward neural networks that are trained off-line via simulation data. Fuzzy sets are also used to provide decision-making capability on uncertain neural network output. The hybrid control chart provides an alternative to

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  • Abstract Amulti-attribute group decisionmakingmethod composed of intuitionistic fuzzy set and TOPSIS will be introduced into project material bidding procurement. First, the opinions of experts about bidders and indicators’ attributes are expressed by linguistic terms, and then turned into intuitionistic fuzzy numbers, which can be used to obtain the weights of the indicators’ attributes and experts. Based on the opinions of decision makers and IFWA operators, an aggregated intuitionistic fuzzy decision matrix is formulated. In the end, the bidders are ranked by TOPSIS method....

    pdf0p taurus23 25-09-2012 27 8   Download

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