Search Results - "variable weight function"

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  1. 1

    A new quantitative method for risk assessment of water inrush in karst tunnels based on variable weight function and improved cloud model by Lin, Chunjin, Zhang, Meng, Zhou, Zongqing, Li, Liping, Shi, Shaoshuai, Chen, Yuxue, Dai, Wenjie

    ISSN: 0886-7798, 1878-4364
    Published: Oxford Elsevier Ltd 01.01.2020
    “…•The VM&ICM model improved the weight distribution of risk indicators and reduced the impact of human subjective factors on the assessment results. And it has…”
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    Journal Article
  2. 2

    Allocating inter-provincial CEA in China based on the utility perspective --a method for improving the variable weight function by Guo, Zhiping, Xiong, Chaohua

    ISSN: 2296-665X, 2296-665X
    Published: Frontiers Media S.A 25.09.2024
    Published in Frontiers in environmental science (25.09.2024)
    “… Specifically, the entropy method, SBM model, improved variable weight function, and ARIMA time series model are sequentially adopted to simulate the re-allocation scheme, examine its rationality…”
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    Journal Article
  3. 3

    Health status perception of oil-immersed power transformers considering wind power uncertainty by Yi, Lingzhi, Su, Xingren, Wang, Yahui, Xu, Xunjian, Liu, Jiangyong, She, Haixiang

    ISSN: 0378-7796, 1873-2046
    Published: Elsevier B.V 01.09.2024
    Published in Electric power systems research (01.09.2024)
    “…•The optimal cloud entropy algorithm is utilizd to enhance the gray cloud model, and a dynamic weight allocation evaluation method is integrated based on…”
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    Journal Article
  4. 4

    Advancing sustainable mining Practices: A dynamic ecological security and risk warning framework for ion-absorbed rare earth mine by Zhang, Jianying, Li, Hengkai, Ren, Guogang, Zhang, Zhiwei, Nie, Shengdong

    ISSN: 0959-6526
    Published: Elsevier Ltd 15.06.2025
    Published in Journal of cleaner production (15.06.2025)
    “…The southern regions of China are rich in ion-adsorbed rare earth mineral resources, primarily distributed in ecologically fragile red soil hilly areas. Recent…”
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    Journal Article
  5. 5

    Chebyshev Approximation by the Power of a Rational Expression by Malachivskyy, P. S., Melnychok, L. S.

    ISSN: 1060-0396, 1573-8337
    Published: Cham Springer International Publishing 01.05.2025
    Published in Cybernetics and systems analysis (01.05.2025)
    “… The approximation by the rational expression is computed as a limiting mean-power approximation using an iterative scheme based on the least squares method with two variable weight functions…”
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    Journal Article
  6. 6

    The Chebyshev Approximation by the Logarithm of a Rational Expression by Malachivskyy, P. S., Melnychok, L. S.

    ISSN: 1060-0396, 1573-8337
    Published: Cham Springer International Publishing 01.01.2025
    Published in Cybernetics and systems analysis (01.01.2025)
    “… The approximation by the rational expression is calculated as the boundary of mean-power approximation using an iterative scheme based on the least squares method with two variable weight functions…”
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    Journal Article
  7. 7

    Chebyshev Approximation of Multivariable Functions by a Power Expression by Malachivskyy, P. S., Melnychok, L. S., Pizyur, Ya. V.

    ISSN: 1060-0396, 1573-8337
    Published: New York Springer US 01.07.2024
    Published in Cybernetics and systems analysis (01.07.2024)
    “… Parameters for the polynomial approximation are computed as the boundary mean-power approximation through an iterative scheme using the least squares method with a variable weight function…”
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    Journal Article
  8. 8

    Chebyshev Approximation of Multivariable Functions by a Logarithmic Expression by Malachivskyy, P. S., Melnychok, L. S., Pizyur, Ya. V.

    ISSN: 1060-0396, 1573-8337
    Published: New York Springer US 01.03.2023
    Published in Cybernetics and systems analysis (01.03.2023)
    “… formed values of variable weight function. The presented results of test examples’ solving confirm the fast convergence of the method in calculating the parameters of the Chebyshev approximation of the functions of one, two, and three variables by the logarithmic expression…”
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    Journal Article
  9. 9

    Chebyshev Approximation of a Multivariable Function with Reproducing the Values of the Function and Its Partial Derivatives by Malachivskyy, P. S., Melnychok, L. S., Pizyur, Ya. V.

    ISSN: 1060-0396, 1573-8337
    Published: New York Springer US 01.07.2023
    Published in Cybernetics and systems analysis (01.07.2023)
    “… The authors use an iterative scheme based on the least squares method with a variable weight function for constructing the mean-power approximation…”
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    Journal Article
  10. 10

    Chebyshev Approximation of Multivariable Functions by the Exponential Expression by Malachivskyy, P. S., Melnychok, L. S., Pizyur, Ya. V.

    ISSN: 1060-0396, 1573-8337
    Published: New York Springer US 01.05.2021
    Published in Cybernetics and systems analysis (01.05.2021)
    “… An iterative scheme based on the least squares method with a variable weight function is used to construct the Chebyshev approximation of the multivariable functions by a generalized polynomial…”
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    Journal Article
  11. 11

    Chebyshev Approximation of Multivariable Functions by a Constrained Rational Expression by Malachivskyy, P. S., Melnychok, L. S., Pizyur, Ya.V.

    ISSN: 1060-0396, 1573-8337
    Published: New York Springer US 01.01.2023
    Published in Cybernetics and systems analysis (01.01.2023)
    “… → ∞. To construct such an approximation, an iterative scheme based on the least squares method with two variable weight functions is used…”
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    Journal Article
  12. 12

    P-116: APL-Adaptive Variable Weight Function for Improving Low Gray-Level Linearity and Gray-Level Expression in PDP-TV by Kang, Sung-Jin, Shin, Jung-Hwan, Lee, Dong-Ho, Chien, Sung-Il, Choi, Il-Hun

    ISSN: 0097-966X, 2168-0159
    Published: Oxford, UK Blackwell Publishing Ltd 01.06.2006
    “…A new method is proposed to enhance the image quality by distributing sustain pulses among the subfields with a different rate according to the APL. Proposed…”
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  13. 13

    Chebyshev Approximation of Functions of Several Variables by Malachivskyy, P. S., Pizyur, Ya. V., Malachivskyi, R. P., Ukhanska, O. M.

    ISSN: 1060-0396, 1573-8337
    Published: New York Springer US 01.01.2020
    Published in Cybernetics and systems analysis (01.01.2020)
    “… → ∞. It is based on serial construction of power-average approximations using the least squares method with variable weight function…”
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    Journal Article
  14. 14

    Fragile States Metric System: An Assessment Model Considering Climate Change by Liu, Yijian, Zhou, Chaoqun, Li, Lin, Su, Liang, Zhang, Yuanbiao

    ISSN: 2071-1050, 2071-1050
    Published: Basel MDPI AG 28.05.2018
    Published in Sustainability (28.05.2018)
    “…)-Entropy method and variable weight function model, to calculate the weights. As the result, from 2007 to 2017, European countries, in particular…”
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  15. 15

    Uniform Approximation of Functions of Two Variables by Malachivskyy, P. S., Matviychuk, Ya. N., Pizyur, Ya. V., Malachivskyi, R. P.

    ISSN: 1060-0396, 1573-8337
    Published: New York Springer US 01.05.2017
    Published in Cybernetics and systems analysis (01.05.2017)
    “… → ∞. It is based on root mean square approximation with variable weight function. We propose a technique of successive adjustment of weight function and give examples…”
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  16. 16

    Chebyshev approximation by the exponent from a rational expression by Malachivskyi, R. P., Bun, R. A., Medynskyi, I. P.

    ISSN: 2312-9794, 2415-3788
    Published: 2025
    “… The approximation by a rational expression is calculated as the boundary mean-power approximation using an iterative scheme based on the least squares method with two variable weight functions…”
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    Journal Article
  17. 17

    Evaluation Method for Insulation State of Cable Intermediate Joint based on Variable Weight and Set Pair Analysis by Liu, Shaohui, Liu, Hao, Chen, Jiayang, Wu, Zhoujun, Liang, Nianbo, Guo, Gouwei, Qiu, Haorong, Deng, Baixi

    ISSN: 2831-4549
    Published: IEEE 18.11.2022
    “… On the basis of determining the constant weights, the corresponding state variable weight function is constructed according to the change law of each index in the process of cable joint insulation…”
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    Conference Proceeding
  18. 18

    Chebyshev Approximation of the Functions of Many Variables with the Condition by Malachivskyy, P. S., Melnychok, L. S., Pizyur, Y. V.

    Published: IEEE 23.09.2020
    “… The mean-power approximation is calculated using an iterative scheme based on the method of least squares with the variable weight function…”
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    Conference Proceeding
  19. 19

    State Evaluation Method of Traction Transformer Based on Variable Weight Coefficient and Bayesian Network by Bi, Sheng, Feng, Ding, Lin, Sheng, Guo, Xiaomin, Pan, Weiguo

    ISSN: 2166-5656
    Published: IEEE 01.10.2020
    “…Traction transformer is one of the core equipment of traction power supply system, and its safe and stable operation are very important for this electrified…”
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    Conference Proceeding
  20. 20

    Risk assessment of buried gas pipelines based on improved cloud-variable weight theory by Chen, Yinuo, Xie, Shuyi, Tian, Zhigang

    ISSN: 0951-8320, 1879-0836
    Published: Barking Elsevier Ltd 01.05.2022
    Published in Reliability engineering & system safety (01.05.2022)
    “…•Variable weight function highlights the negative effects of the index with higher risk.•Can help pipeline operators make optimal risk decisions with limited resources…”
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    Journal Article