FTB-C000318 / Implementation concept

Wilder SMA Seed

Wilder SMA Seed initializes a Wilder moving average with the arithmetic mean of its first n eligible inputs.

Also known asRMA initialization

Intermediate 2 linked topicsPublished

Definitions

In plain terms

It provides a deterministic starting state before recursive alpha-one-over-n updates begin.

Technical

The seed contract defines eligible observations, window endpoints, missing values, first-ready index, and precision.

Scope

Using the first input as the seed creates a different early series.

Examples

  • A governed lesson uses Wilder SMA Seed only with declared inputs, timing, parameters, and edge-case behavior.

Common misconceptions

  • Using the first input as the seed creates a different early series.

Concept relationships

Prerequisites

Related

Required by

Where this concept is used

Tutorials planned

These catalogued topics use this concept, but their complete build has not shipped yet.

  • D07-F01-A04 Prerequisite
  • D07-F03-A01 Important

Evidence and governance

  1. Wilder Smoothing in TA-Lib RSI TA-Lib · first party technical publication

    Supports: preferred label, short definition, technical definition

    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
published
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.