docs(periods): fix corrupted period-calculation.md and add outlier filtering documentation

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Completely rewrote period-calculation.md after severe corruption (massive text
duplication throughout the file made it 2489 lines).

Changes:
- Fixed formatting: Removed all duplicate text and headers
- Reduced file size: 2594 lines down to 516 lines (clean, readable structure)
- Added section 5: "Statistical Outlier Filtering (NEW)" explaining:
  - Linear regression-based spike detection (95% confidence intervals)
  - Symmetry checking to preserve legitimate price shifts
  - Enhanced zigzag detection with relative volatility
  - Data integrity guarantees (original prices always used)
  - New period attributes: period_interval_smoothed_count
- Added troubleshooting: "Price spikes breaking periods" section
- Added technical details: Algorithm constants and implementation notes

Impact: Users can now understand how outlier filtering prevents isolated
price spikes from breaking continuous periods. Documentation is readable
again with no duplicate content.

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This commit is contained in:

Julian Pawlowski 2025-11-12 16:59:07 +00:00

parent a2c684821d

commit b46f8a2d28

1 changed files with 326 additions and 2298 deletions

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