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| Convergent Cross Mapping (CCM)× | Diskreetse entroopia meetod (Sample Entropy)× | |
|---|---|---|
| Valdkond≠ | Põhjuslik järeldamine | Komplekssüsteemid |
| Perekond | Machine learning | Machine learning |
| Tekkeaasta≠ | 2012 | 2000 |
| Looja≠ | George Sugihara et al. | Richman & Moorman |
| Tüüp≠ | Nonlinear time-series causality test | Nonlinear entropy measure |
| Algallikas≠ | Sugihara, G., et al. (2012). Detecting causality in complex ecosystems. Science, 338(6106), 496–500. DOI ↗ | Richman, J. S., & Moorman, J. R. (2000). Physiological time-series analysis using approximate entropy and sample entropy. American Journal of Physiology, 278(6), H2039–H2049. DOI ↗ |
| Rööpnimetused | CCM, Cross-Convergent Mapping, Empirical Dynamic Modelling Causality, Yakınsak Çapraz Haritalama | SampEn, Sample Entropy (SampEn), Örneklem Entropisi, Nonlinear Complexity Measure |
| Seotud≠ | 3 | 2 |
| Kokkuvõte≠ | Convergent Cross Mapping (CCM) is a nonlinear, state-space method for detecting causality between time-series variables embedded in a shared dynamical system. Introduced by George Sugihara and colleagues in their landmark 2012 Science paper, CCM exploits Takens' embedding theorem: if variable X causally influences Y, the historical record of Y contains enough information to recover the states of X. Causality is confirmed when cross-map skill improves—converges—as the time-series library grows longer. | Sample Entropy (SampEn) is a nonlinear measure of the complexity and regularity of a time series. Introduced by Richman and Moorman in 2000 as an improvement over Approximate Entropy (ApEn), it quantifies the likelihood that similar patterns of a given length in the series remain similar when extended by one additional data point. A higher SampEn value indicates greater irregularity and complexity, while a lower value indicates more regularity or self-similarity. |
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