Results 61 to 70 of about 456,367 (154)
Complexity, 2014 To analyze the complexity of continuous chaotic systems better, the modified multiscale permutation entropy (MMPE) algorithm is proposed. Characteristics and parameter choices of the MMPE algorithm are investigated. The comparative study between MPE and MMPE shows that MMPE has better robustness for identifying different chaotic systems when the scale ...
Shaobo He 0001, Kehui Sun, Huihai Wang
openaire +2 more sources
Refined scale-dependent permutation entropy to analyze systems complexity [PDF]
, 2016 Multiscale entropy (MSE) has become a prevailing method to quantify the complexity of systems. Unfortunately, MSE has a temporal complexity in O(N2)O(N2), which is unrealistic for long time series.
A. Humeau-Heurtier +5 more
core +1 more source
Permutation Entropy for the Characterisation of Brain Activity Recorded with Magnetoencephalograms in Healthy Ageing [PDF]
, 2019 The characterisation of healthy ageing of the brain could help create a fingerprint of normal ageing that might assist in the early diagnosis of neurodegenerative conditions. This study examined changes in resting state MEG permutation entropy due to age
Shumbayawonda, Elizabeth +3 more
core +1 more source
Maximum entropy variable permutation importance.
, 2021 Maximum entropy variable permutation importance.
Thomas R. Unnasch (7444841) +3 more
core +1 more source
A Rolling Bearing Fault Classification Scheme Based on k-Optimized Adaptive Local Iterative Filtering and Improved Multiscale Permutation Entropy. [PDF]
Entropy (Basel), 2021 Zhang Y, Lv Y, Ge M.
europepmc +1 more source
IEEE Access, 2019 Lung cancer is the major cause of cancer-related deaths worldwide with poor survival due to the poor diagnostic system at the advanced cancer stage. In the past, researchers developed computer-aided diagnosis (CAD) systems, which were greatly used by the
Lal Hussain +5 more
doaj +1 more source
Adaptive Multiscale Symbolic-Dynamics Entropy for Condition Monitoring of Rotating Machinery
Entropy, 2019 Vibration data from rotating machinery working in different conditions display different properties in spatial and temporal scales. As a result, insights into spatial- and temporal-scale structures of vibration data of rotating machinery are fundamental ...
Chunhong Dou, Jinshan Lin
doaj +1 more source
Multivariate Multiscale Complexity Analysis of Self-Reproducing Chaotic Systems
Entropy, 2018 Designing a chaotic system with infinitely many attractors is a hot topic. In this paper, multiscale multivariate permutation entropy (MMPE) and multiscale multivariate Lempel–Ziv complexity (MMLZC) are employed to analyze the complexity of those ...
Shaobo He +3 more
doaj +1 more source
Time-shift multiscale entropy analysis of physiological signals
, 2017 Measures of predictability in physiological signals using entropy measures have been widely applied in many areas of research. Multiscale entropy expresses different levels of either approximate entropy or sample entropy by means of multiple factors for ...
Tuan D. Pham, Pham, Tuan,, Pham, Tuan
core +1 more source
Tool Wear State Identification Based on the IWOA-VMD Feature Selection Method
MachinesComplex, thin-walled components are the most important load-bearing structures in aircraft equipment. Monitoring the wear status of milling cutters is critical for enhancing the precision and efficiency of thin-walled item machining.
Xing Shui +4 more
doaj +1 more source