FTB-C000659 / Evidence concept

Double-Bottom Rejection Reason

Double-Bottom Rejection Reason is the stable diagnostic explaining why a double-bottom candidate failed a frozen rule.

Advanced 1 linked topicEvidence-reviewed

Definitions

In plain terms

Reviewers can see whether mismatch, shallow rebound, weak prior decline, or expiry caused rejection.

Technical

Reasons are deterministic and preserve the first failed geometry or timing boundary rather than collapsing all failures into false.

Scope

Diagnostic reasons make pattern scans auditable and teach boundary behavior.

Examples

  • A reviewer computes Double-Bottom Rejection Reason on a deterministic close fixture and checks pivot timing, threshold equality, neckline behavior, and rejection diagnostics before publication.

Common misconceptions

  • Diagnostic reasons make pattern scans auditable and teach boundary behavior.

Concept relationships

Prerequisites

Related

Required by

Where this concept is used

Evidence and governance

  1. Foundations of Technical Analysis: Computational Algorithms, Statistical Inference, and Empirical Implementation Lo, Mamaysky, and Wang · first party technical publication

    Supports: preferred label, short definition, technical definition

    Limits: The paper's smoothing, sample, and empirical design are not copied into this package and do not validate its thresholds.

  2. Pine Script repainting concepts TradingView · official platform documentation

    Supports: preferred label, short definition, technical definition

    Limits: Platform display behavior does not establish financial usefulness or predictive value.

  3. scipy.signal.find_peaks SciPy · first party technical publication

    Supports: preferred label, short definition, technical definition

    Limits: This retrospective signal function is not itself a causal OHLC pivot detector.

  4. Pine Script pivot techniques TradingView · official platform documentation

    Supports: preferred label, short definition, technical definition

    Limits: The package freezes its own equality, separation, and OHLC policies rather than claiming one universal pivot definition.

  5. Zig Zag indicator QuantConnect · official platform documentation

    Supports: preferred label, short definition, technical definition

    Limits: This package selects a close-only percentage-reversal variant and documents the difference.

  6. LEAN ZigZag source QuantConnect · first party technical publication

    Supports: preferred label, short definition, technical definition

    Limits: A maintained implementation is evidence for one convention, not a universal market rule.

Reviewed by
fintech-builder-batch-012
Last reviewed
2026-08-10
Next review
2027-08-10
Record status
evidence reviewed

This record is evidence-reviewed and readable, but not yet promoted to published — it is served noindex,follow and excluded from the sitemap.

Written by

Fintech engineer building market-data and financial systems, and the author of every article, glossary record, and reference implementation on The Fintech Builder.