Results 21 to 30 of about 1,200,520 (247)

Weakly fuzzy topological entropy [PDF]

open access: yes, 2022
summary:In 2005, İ. Tok fuzzified the notion of the topological entropy R. A. Adler et al. (1965) using the notion of fuzzy compactness of C. L. Chang (1968).
Afsan, B M Uzzal
core   +1 more source

Comparative Study on Feature Extraction of Marine Background Noise Based on Nonlinear Dynamic Features

open access: yesEntropy, 2023
Marine background noise (MBN) is the background noise of the marine environment, which can be used to invert the parameters of the marine environment. However, due to the complexity of the marine environment, it is difficult to extract the features of ...
Guanni Ji, Yu Wang, Fei Wang
doaj   +1 more source

A new fractional fuzzy dispersion entropy and its application in muscle fatigue detection

open access: yesMathematical Biosciences and Engineering, 2023
Abstract Background The complexity analysis of neuroelectrophysiological signals has been widely applied in the field of biomedical engineering and muscle fatigue detection using the complexity analysis of surface electromyographic (sEMG) signals is one of the hot research topics.
Baohua Hu, Yong Wang, Jingsong Mu
openaire   +3 more sources

A Robust and High-Dimensional Clustering Algorithm Based on Feature Weight and Entropy

open access: yesEntropy, 2023
Since the Fuzzy C-Means algorithm is incapable of considering the influence of different features and exponential constraints on high-dimensional and complex data, a fuzzy clustering algorithm based on non-Euclidean distance combining feature weights and
Xinzhi Du
doaj   +1 more source

Pipeline signal feature extraction method based on multi-feature entropy fusion and local linear embedding

open access: yesSystems Science & Control Engineering, 2022
This paper considers the problem of effective feature extraction of acoustic signals from oil and gas pipelines under different working conditions. A feature extraction of pipeline leakage detection method is proposed based on multi-feature entropy ...
Dandi Yang   +3 more
doaj   +1 more source

Exponential entropy on intuitionistic fuzzy sets [PDF]

open access: yes, 2013
summary:In the present paper, based on the concept of fuzzy entropy, an exponential intuitionistic fuzzy entropy measure is proposed in the setting of Atanassov's intuitionistic fuzzy set theory. This measure is a generalized version of exponential fuzzy
Verma, Rajkumar, Sharma, Bhu Dev
core   +1 more source

Forecasting China carbon price using an error-corrected secondary decomposition hybrid model integrated fuzzy dispersion entropy and deep learning paradigm

open access: yesEnvironmental Science and Pollution Research, 2023
Abstract To promote the market-oriented mechanism in carbon emission reduction, improve the role of carbon price forecasting in guiding investors to make quantitative investments, this paper constructs a error corrected carbon price forecasting model integrated fuzzy dispersion entropy and deep learning paradigm, namely, ICEEMDAN-FDE-VMD-PSO ...
Po Yun   +4 more
openaire   +2 more sources

Fuzzy clustering methods with Rényi relative entropy and cluster size

open access: yes, 2021
In the last two decades, information entropy measures have been relevantly applied in fuzzy clustering problems in order to regularize solutions by avoiding the formation of partitions with excessively overlapping clusters.
Vélez Serrano, Daniel   +3 more
core   +2 more sources

Comparison and Research on Diversified Portfolios with Several Entropy Measures Based on Different Psychological States

open access: yesEntropy, 2020
In previous studies, there were few portfolio models involving investors’ psychological states, market ambiguity and entropy. Some entropy can make the model have the effect of diversifying investment, which is very important.
Xue Deng, Tao Lin, Chuangjie Chen
doaj   +1 more source

A comparative study of four types of multi-scale entropies in feature extraction of underwater acoustic signals for potential GNSS positioning applications

open access: yesFrontiers in Physics, 2022
The combination of underwater acoustic processing and the Global Navigation Satellite System (GNSS) has achieved remarkable economic benefits in offshore operations.
Danning Zhao   +5 more
doaj   +1 more source

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