cELF 1.0

Capta-Enriched Locatable Factum

cELF defines how to preserve a record’s source and revision history, and how to link a generated claim to the exact passages used as evidence.

Read the cELF specification (English)

Follow a claim back to the source

This example follows a claim to the specific record revision that supports it.

  1. Generated claim

    The statement you want to check.

  2. Support binding

    How the evidence bears on that statement.

  3. Evidence reference

    A reference to the exact material used.

  4. Record revision

    The version of the record used as evidence.

  5. Source span

    A precise location in the original document or recording.

An evidence reference can also point directly to a source span, such as a page range or an audio time span.

A field value has a history

When a researcher confirms a model’s suggestion, cELF keeps the original derivation alongside the review decision.

Illustrative field assertion

Position holder Levinas

Derivation
Model suggestion
Evaluation
Value supported
Authority
Human confirmed
Value state
Present

Carry the record between tools

The Core profile defines durable records. Additional profiles describe what an implementation supports for publication, evidence, claim binding, and reproducible research.

Publish a fixed version

A corpus publication freezes a set of records for citation and reuse. Corrections create a new version.

Publication and interchange

Exchange provenance

The W3C PROV mapping describes how to carry relationships among research objects, activities, and contributors.

PROV mapping profile

Package a research run

The RO-Crate profile describes how to package records, evidence, and run metadata so others can examine how a result was produced.

RO-Crate profile

Search indexes and embeddings are derived from records. A system can rebuild them while keeping record identities and source locations stable.