Results 21 to 30 of about 23,082 (239)
Dispersion entropy for graph signals
Chaos, Solitons & Fractals, 2023 We present a novel method, called Dispersion Entropy for Graph Signals, DEG, as a powerful tool for analysing the irregularity of signals defined on graphs. DEG generalises the classical dispersion entropy concept for univariate time series, enabling its application in diverse domains such as image processing, time series analysis, and network analysis.
John Stewart Fabila-Carrasco +2 more
openaire +2 more sources
Reverse Dispersion Entropy: A New Complexity Measure for Sensor Signal [PDF]
Sensors, 2019 Yuxing Li, Li Yuxing
exaly +2 more sources
Sensors, 2023 The utilization of multiscale entropy methods to characterize vibration signals has proven to be promising in intelligent diagnosis of mechanical equipment.
Zhengkun Xue +4 more
doaj +1 more source
A New Method of Fault Feature Extraction Based on Hierarchical Dispersion Entropy
Shock and Vibration, 2021 In the process of fault feature extraction of rolling bearing, the feature information is difficult to be extracted fully. A novel method of fault feature extraction called hierarchical dispersion entropy is proposed in this paper.
Peng Chen, Xiaoqiang Zhao, HongMei Jiang
doaj +1 more source
Entropy, 2021 In order to accurately identify various types of ships and develop coastal defenses, a single feature extraction method based on slope entropy (SlEn) and a double feature extraction method based on SlEn combined with permutation entropy (SlEn&PE) are ...
Yuxing Li +4 more
doaj +1 more source
Information Entropy as a Reliable Measure of Nanoparticle Dispersity [PDF]
Chemistry of Materials, 2020 Nanoparticle size impacts properties vital to applications ranging from drug delivery to diagnostics and catalysis. As such, evaluating nanoparticle size dispersity is of fundamental importance. Conventional approaches, such as standard deviation, usually require the nanoparticle population to follow a known distribution and are ill-equipped to deal ...
Niamh Mac Fhionnlaoich, Stefan Guldin
openaire +4 more sources
Hierarchical Multiscale Fluctuation Dispersion Entropy for Fuel Injection System Fault Diagnosis
Polish Maritime Research, 2023 Marine electronically controlled (ME) two-stroke diesel engines occupy the highest market share in newly-built ships and its fuel injection system is quite different and important.
Shi Qingguo, Hu Yihuai, Yan Guohua
doaj +1 more source
Entropy, 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
Text Entropy as Dispersion of Meaning
Vestnik of Northern (Arctic) Federal University. Series Humanitarian and Social Sciences, 2023 This article analyses the entropy of the language system in general and text entropy in particular. Based on the study of entropy in linguistics, the authors aim to substantiate the concept of text entropy and describe the process of chronotopic translation.
Larisa E. Il’ina +1 more
openaire +1 more source
Single Feature Extraction Method of Bearing Fault Signals Based on Slope Entropy
Shock and Vibration, 2022 As an entropy representing the complexity of sequence, slope entropy (SloE) is applied to feature extraction of bearing signal for the first time. With the advantage of slope entropy in feature extraction, the effectiveness of bearing fault signal ...
Erna Shi
doaj +1 more source