Two-state hidden Markov process --- alternates between calm (σ=0.5) and volatile (σ=3.0) regimes with asymmetric transition rates
Standard analysis sees: left-skewed; smooth / autocorrelated; long-range memory (persistent); volatility-clustering (bursty); low-dimensional; nonstationary / drifting. The atlas additionally detects Nonstationarity:adf_pvalue. It sits beside ETH/BTC Ratio in the atlas (standard-bank rank 26) — a neighbor conventional features miss.









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/phi_spectrum/Regime_Switching.png)










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| Nearest neighbor | Distance | |
|---|---|---|
| ETH/BTC Ratio | 2.39 | cross-origin |
| Brownian Walk | 2.58 | |
| Levy Flight | 3.00 |
Catch24 › Catch24:PD_PeriodicityWang_th0_01 | rank 4/307 | 3475.2000 |