ISO 22989 Revision Checker
ISO/IEC 22989:2022/FDAmd 1 Amendment 1: Generative AI Stage 50.00 Planning date 16 Feb 2027, an estimate 117 defined terms · 23 clause pages

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Terms related to neural networks · 3.4.7

long short-term memory

a recurrent neural network type that handles sequential data well across both long and short dependencies

  • definition
  • Defined term
  • ISO/IEC 22989:2022/FDAmd 1
  • Last updated: 2026-10-21

What this term settles

The term looks ordinary until two teams use it differently. The entry removes that room by naming the thing, its inputs and its limits in one sentence.

Who it binds

A definition binds nobody on its own. It binds the reader who adopts long short-term memory in a policy, a contract, a data schema or an assurance argument.

What to do in your practice

Put long short-term memory in the controlled vocabulary with its citation, an owner and a review date. Then test the inventory and the policy against the entry and record every place the firm uses a different word for the same thing.

Evidence an auditor or regulator asks for

  • A controlled vocabulary entry for long short-term memory with the citation 3.4.7, an owner and a review date.
    An auditor can check that the term is controlled rather than assumed.
  • A model architecture note that names the network form and the layers used.
    Shows long short-term memory in use in the artefact the firm relies on, not only in a glossary.
  • A test record that shows the behaviour the architecture was chosen for.
    The architecture note uses the network name as a marketing label with no layer or training detail behind it.
Ask your teamWhat would change in the inventory if the firm adopted this entry tomorrow?

Common gaps this page catches

  • long short-term memory is used in the network architecture note without a written definition, so two teams can mean different things.
  • The entry exists in a glossary but not in the system record, so the two disagree at the point of use.

What to prepare before the amendment lands

Brief the owners who use long short-term memory most often, then ask each to return one artefact that shows the entry in use. File the artefacts against the register row.

How to test it here

Take one live artefact rather than a template, find the sentence or field where long short-term memory is used, and put this page beside it. Record the answer, the artefact and the date, because that record is the evidence and a glossary entry on its own is only an intention.

What this page does not claim

The page does not reproduce the standard, certify the firm or predict the wording the amendment will use; it states long short-term memory at the claim level "definition" and stops where the public record stops.

Common questions

What does long short-term memory mean in ISO 22989?
a recurrent neural network type that handles sequential data well across both long and short dependencies
What evidence should we keep for 3.4.7?
A controlled vocabulary entry for long short-term memory with the citation 3.4.7, an owner and a review date. A model architecture note that names the network form and the layers used.
Is long short-term memory a requirement?
No: long short-term memory is a definition or clause of a terminology standard, and it becomes binding only when a firm writes it into a policy, a contract or a procedure, or when another standard incorporates it.

Related units

Source. ISO/IEC 22989:2022, Clause 3.4.7, Terms and definitions. Open the ISO public entry. Retrieved 21 October 2026.

https://www.iso.org/obp/ui/en/#iso:std:iso-iec:22989:ed-1:v1:en

ISO catalogue record 88145, the amendment status, stage and dates. Catalogue record 74296, the base standard.

Claim level: definition. The definition is in the public preview. This page states it in our own words and does not reproduce the text.

Built from the public ISO record and the public clause 3 entries. No clause text is reproduced. How the record is built.

Last updated: 2026-10-21 · Markdown version · Check your vocabulary