Cross-Correlation
Cross-correlation evaluates dependence between multiple entropy sources.
Implemented in openentropy_core::analysis via
cross_correlation_matrix().
What It Computes
Section titled “What It Computes”- Pairwise Pearson correlation for all source pairs
- Flag count for pairs whose absolute correlation exceeds threshold
| Metric | Description |
|---|---|
pairs | Correlation coefficient for each source pair |
flagged_count | Number of pairs with ` |
Interpretation
Section titled “Interpretation”Independent sources should show low pairwise correlation. Elevated cross-correlation can indicate shared hardware pathways, scheduling coupling, or environmental coupling that reduces effective independence.
Usage Notes
Section titled “Usage Notes”- Requires two or more sources
- Enabled by
--profile deepor--cross-correlation