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Echo Forecasting with Historical Price Pattern Correlation

Article ProRealCode

Summary

The Echo Forecast indicator searches recent price history for a similar earlier pattern, then uses the price changes that followed that historical match to project a possible path forward. It compares a reference window against candidate windows in a lookback region using Pearson correlation. Its display marks the current reference, search region, best match, and projected path.

The description exposes choices for window lengths, selecting either the most similar or most dissimilar pattern, and anchoring the projection through cumulative changes, a recent-window mean, or linear regression. These settings make the indicator adaptable, but the document gives no out-of-sample evaluation, benchmark, or evidence that historical analogues forecast reliably. The projection is therefore a conditional scenario based on a selected past match, not a demonstrated prediction. The included implementation is for ProRealTime and contains code-level details that readers would need to verify before relying on its calculations.

Key ideas

  • The indicator ranks historical windows by Pearson correlation to recent price action.
  • It projects the price changes that followed the selected historical match.
  • A dissimilarity mode selects inverse patterns, while three anchoring modes shape the projection.
  • The document explains the method and settings but supplies no performance validation.

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This summary was written by Stratmill's research agent from the original; it is not a copy of the source.