Table 2.
The list of entropies, undirected and directed spatiotemporal (spt.), and complex network features reviewed in this work.
| Group | Feature Name | Abbr. | Group | Feature Name | Abbr. |
|---|---|---|---|---|---|
| Entropies | Shannon entropy | Undirected spt. | Imaginary component of Coh | ||
| Renyi’s entropy | Phase-lag index | PLI | |||
| Tsallis entropy | Weighted phase lag index | wPLI | |||
| Kraskov entropy | KE | Debiased weighted PLI | dwPLI | ||
| Spectral entropy | SEN | Pairwise phase consistency | PPC | ||
| Quadratic Renyi’s SEN | QRSEN | Generalized synchronization | |||
| Response entropy | RE | Synchronization likelihood | SL | ||
| State entropy | SE | Mutual information | MI | ||
| Wavelet entropy | WE | Mutual information in freq. | MIF | ||
| Tsallis wavelet entropy | TWE | Cross-RQA | |||
| Rényi’s wavelet entropy | RWE | Correlation length | ξKLD | ||
| Hilbert-Huang SEN | HHSE | Directed spt. | Granger causality | ||
| Log energy entropy | LogEn | Spectral Granger causality | |||
| Multiresolution entropy | Phase slope index | PSI | |||
| Kolmogorov’s entropy | Complex networks | Number of vertices | |||
| Nonlinear forecasting entropy | Number of edges | ||||
| Maximum-likelihood entropy | Degree | D | |||
| Coarse-grained entropy | Mean degree | ||||
| Correntropy | CoE | Degree distribution | |||
| Approximate entropy | ApEn | Degree correlation | r | ||
| Sample entropy | SampEn | Kappa | k | ||
| Quadratic sample entropy | QSE | Clustering coefficiet | |||
| Multiscale entropy | MSE | Transitivity | |||
| Modified multiscale entropy | MMSE | Motif | |||
| Composite multiscale entropy | CMSE | Characteristic path length | |||
| Permutation entropy | PE | Small worldness | |||
| Renyi’s permutation entropy | RPE | Assortativity | |||
| Permutation Rényi entropy | PEr | Efficiency | |||
| Multivariate PE | MvPE | Local efficiency | |||
| Tsallis permutation entropy | TPE | Global efficiency | |||
| Dispersion entropy | DisE | Modularity | |||
| Amplitude-aware PE | AAPE | Centrality degree | |||
| Bubble entropy | BE | Closesness centrality | |||
| Differential entropy | DifE | Eigenvalue centrality | |||
| Fuzzy entropy | FuzzyEn | Betweenness centrality | |||
| Transfer entropy | TrEn | Diameter | d | ||
| Undirected spt. | Coherence | Eccentricity | Ecc | ||
| Partial coherence | Hubs | ||||
| Phase coherence | Rich club | ||||
| Phase-locking value | PLV | Leaf fraction | |||
| Coherency | Coh | Hierarchy | Th |