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v2026.1714 entries · CC-BY 4.0
CASRAI
Dictionary termTrack CStablev2026.2

Model lineage

The chain of provenance for a model recording its base model, the fine-tuning datasets and procedures applied, and any further derivatives, such that any deployed model can be traced back to its constituent training operations.

ByCASRAI Editorial Board
· Last updated 21 May 2026

Examples

Worked examples

  • Is an instance

    A fine-tuned medical-coding model declaring base = Llama-3 70B and fine-tune = institutional 12M-record corpus.

  • Is an instance

    A model lineage graph linking 14 community fine-tunes back to a single Mistral base release.

Counter-examples

Looks similar, but isn't

  • Not an instance

    A model with no declared base.

  • Not an instance

    A version history of a single training run with no derivative chain.

Editorial commentary

Model lineage matters for licence compliance (a derivative of a non-commercial base inherits the constraint), for security (a base model with a known vulnerability propagates to fine-tunes), for auditability, and for reproducibility. Hugging Face's 'finetuned_from' metadata and SPDX-style provenance graphs are emerging mechanisms.

References

  • MLCommons AILuminate provenance work; SPDX AI Profile draft.

Also known as

model provenance · model ancestry

Machine-readable encodings

Use in your systems

JATS XML <role> element
xml
<role vocab="credit"
      vocab-identifier="https://casrai.org/dictionary/"
      vocab-term="Model lineage"
      vocab-term-identifier="https://casrai.org/dictionary/term/model-lineage" />
Schema.org DefinedTerm (JSON-LD)
json
{
  "@context": "https://schema.org",
  "@type": "DefinedTerm",
  "name": "Model lineage",
  "identifier": "https://casrai.org/dictionary/term/model-lineage",
  "description": "The chain of provenance for a model recording its base model, the fine-tuning datasets and procedures applied, and any further derivatives, such that any deployed model can be traced back to its constituent training operations.",
  "inDefinedTermSet": "https://casrai.org/dictionary/domain/ai-and-ml-research-outputs/",
  "url": "https://casrai.org/dictionary/term/model-lineage",
  "sameAs": [
    "model provenance",
    "model ancestry"
  ],
  "license": "https://creativecommons.org/licenses/by/4.0/"
}
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