31 citations · 128 across the 14 of their papers we have counts for
14 papers
Fuzzy permutation time irreversibility for nonequilibrium analysis of complex system
Wenpo Yao
Permutation time irreversibility is an important method to quantify nonequilibrium characteristics of complex systems; however, ordinal pattern is a coarse-graining alternative of…
Permutation time irreversibility in sleep electroencephalograms: Dependence on sleep stage and the effect of equal values
Wenpo Yao
Time irreversibility (TIR) refers to the manifestation of nonequilibrium brain activity influenced by various physiological conditions; however, the influence of sleep on electroen…
Threshold distribution of equal states for quantitative amplitude fluctuations
Yao Wenpo, Yao Wenli, Wang Jun
Objective. The distribution of equal states (DES) quantifies amplitude fluctuations in biomedical signals. However, under certain conditions, such as a high resolution of data coll…
Comparative analysis of time irreversibility and amplitude irreversibility based on joint permutation
Wenpo Yao, Wenli Yao, Rongshuang Xu +1
Although time irreversibility (TIR) and amplitude irreversibility (AIR) are relevant concepts for nonequilibrium analysis, their association has received little attention. This pap…
A novel parameter for nonequilibrium analysis in reconstructed state spaces
Wenpo Yao, Wenli Yao, Jun Wang
Kernel methods are widely used for probability estimation by measuring the distribution of low-passed vector distances in reconstructed state spaces. However, the information conve…
Comparative analysis of the original and amplitude permutations
Wenpo Yao, Wenli Yao, Jun Wang
The original and amplitude permutations are two basic ordinal patterns; however, their relationship has received little attention. This paper compares the original and amplitude pe…
Time irreversibility and amplitude irreversibility measures for nonequilibrium processes
Wenpo Yao, Jun Wang, Matjaz Perc +4
Time irreversibility, which characterizes nonequilibrium processes, can be measured based on the probabilistic differences between symmetric vectors. To simplify the quantification…
Equal heartbeat intervals and their effects on the nonlinearity of permutation-based time irreversibility in heart rate
Yao Wen-po, Yao Wen-li, Wang Jun
The association of equal heartbeat intervals with cardiac conditions and the effect of the equality on permutation-based time irreversibility are investigated in this paper. We mea…
Time irreversibility and its application in epileptic brain electrical activities
Yao Wen-po, Yao wen-li, Dai Jia-fei +1
Time irreversibility (temporal asymmetry) is one of fundamental properties that characterize the nonlinearity of complex dynamical processes, and our brain is a typical complex dyn…
Double symbolic joint entropy in nonlinear dynamic complexity analysis
Wenpo Yao, Jun Wang
Symbolizations, the base of symbolic dynamic analysis, are classified as global static and local dynamic approaches which are combined by joint entropy in our works for nonlinear d…
Differential symbolic entropy in nonlinear dynamics complexity analysis
Wenpo Yao, Jun Wang
Differential symbolic entropy, a measure for nonlinear dynamics complexity, is proposed in our contribution. With flexible controlling parameter, the chaotic deterministic measure…
Effects of controlling parameter on symbolic nonlinear complexity detection
Wenpo Yao, Min Wu, Jun Wang
Symbolic transformation, a coarse-graining process, is a crucial prerequisite for and has evidential influence to the symbolic time series analysis. We employ Shannon entropy for a…
Quantifying time irreversibility using probabilistic differences between symmetric permutations
Wenpo Yao, Wenli Yao, Jun Wang +1
To simplify the quantification of time irreversibility, we employ order patterns instead of the raw multi-dimension vectors in time series, and considering the existence of forbidd…
Symbolic relative entropy in quantifying nonlinear dynamics of equalities-involved heartbeats
Wenpo Yao Wenli Yao, Jun Wang
Symbolic relative entropy, an efficient nonlinear complexity parameter measuring probabilistic divergences of symbolic sequences, is proposed in our nonlinear dynamics analysis of…