Definitions
In plain terms
It bounds the adaptive coefficient toward a more responsive update when efficiency is high.
Technical
The period-to-alpha convention, allowed parameter ordering, precision, and effective version must be explicit.
Scope
Fast describes the parameter bound, not guaranteed reaction on every observation.
Formula
Fast SC = 2 / (fast period + 1)SC_f=\frac{2}{n_f+1}| Symbol | Meaning | Unit |
|---|---|---|
n_f | declared fast period | observations |
Output unit: ratio
Examples
- A governed lesson uses Fast Smoothing Constant only with declared inputs, timing, parameters, and edge-case behavior.
Common misconceptions
- Fast describes the parameter bound, not guaranteed reaction on every observation.
Concept relationships
Prerequisites
Required by
Where this concept is used
Evidence and governance
- Kaufman Adaptive Moving Average TA-Lib · first party technical publication
Supports: preferred label, short definition, technical definition, formula
Limits: Implementation seeding, readiness, and parameter defaults must be frozen for reproducible parity.
- Reviewed by
- fintech-builder-batch-006
- Last reviewed
- 2026-07-27
- Next review
- 2027-07-27
- 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.