Definitions
In plain terms
It gives a period-n RMA more persistence than a common span-n EMA using 2/(n+1).
Technical
The period must be positive and its label must not be silently converted into another alpha convention.
Scope
Equal period labels do not imply equal decay across RMA and standard EMA.
Formula
Wilder alpha = 1 / n\alpha_W=\frac{1}{n}| Symbol | Meaning | Unit |
|---|---|---|
n | Wilder smoothing period | observations |
Output unit: ratio
Examples
- A governed lesson uses Wilder Alpha only with declared inputs, timing, parameters, and edge-case behavior.
Common misconceptions
- Equal period labels do not imply equal decay across RMA and standard EMA.
Concept relationships
Where this concept is used
Evidence and governance
- Wilder Smoothing in TA-Lib RSI TA-Lib · first party technical publication
Supports: preferred label, short definition, technical definition, formula
Limits: The source is an RSI implementation; applying the recurrence to a standalone RMA requires an explicit input and readiness contract.
- 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.