Per-beat correlation against a record-specific normal-beat template, MIT-BIH Long-Term ECG (7 records, 14-22 h each, 128 Hz). One scalar per heartbeat: normal beats saturate near 1.0; ectopic beats (V, A, F, S) drop proportionally to morphology deviation and recover on the next normal beat. Stays-at-max + episodic-downward-spike phenotype.
Standard analysis sees: heavy-tailed; left-skewed; high-complexity (noise-like); low-dimensional. The atlas finds no named structure, but the source is distinctively extreme on Nonstationarity:change_quantiles_low (+4.2z) — beyond what the standard bank predicts for it. It sits beside Earthquake Depths in the atlas (standard-bank rank 51) — a neighbor conventional features miss.
Nonstationarity:change_quantiles_low | +4.2z | bank-miss 3.1σ |
Piecewise-Linear:envelope_area | +3.2z | bank-miss 2.5σ |
Attractor Reconstruction:lyap_entropy | +3.0z | bank-miss 2.1σ |








_(centered)/signed_log_z/ECG_Beat_Conformity.png)
_(centered)/xy_path/ECG_Beat_Conformity.png)

/barcode/ECG_Beat_Conformity.png)
/d_curve/ECG_Beat_Conformity.png)








/phi_spectrum/ECG_Beat_Conformity.png)










/default/ECG_Beat_Conformity.png)
/default/ECG_Beat_Conformity.png)


| Nearest neighbor | Distance | |
|---|---|---|
| Earthquake Magnitudes | 3.99 | cross-domain |
| Multiplicative Cascade | 4.13 | cross-domain |
| Earthquake Depths | 4.26 | cross-domain |
Attractor Reconstruction › Attractor Reconstruction:lyap_sum | rank 3/298 | 2.6414 |
Attractor Reconstruction › Attractor Reconstruction:lyap_entropy | rank 4/298 | 3.4939 |
Catch24 › Catch24:DN_Mean | rank 2/298 | 0.9220 |
Hölder Regularity › Hölder Regularity:holder_std | rank 2/298 | 1.9195 |
Nonstationarity › Nonstationarity:change_quantiles_low | rank 2/298 | 0.1438 |
Piecewise-Linear › Piecewise-Linear:envelope_area | rank 2/298 | 14611.7722 |