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Redaction and de-identification

Also: redacted, anonymization, anonymisation, pseudonymization

In plain words

Removing private details before sharing a file. A black box on a page may hide text without deleting it.

The fuller definition

Redaction removes or masks information from a document before it is shared or processed. De-identification goes further, removing or replacing details that could identify a person.

Keep the source attached as a document becomes usable text
A01 · PAGE 2

Delivery may be possible in April.

Subject to inspection.

CHUNK 1 · A01 / P2

Delivery may be possible in April. Subject to inspection.

METADATA

source_id: A01
page: 2
version: original

This fictional example keeps a condition beside the proposition it qualifies. Extraction and chunking should preserve enough context to inspect what the source actually says.

A concrete example

Party names and the matter name are replaced with codes before a document is sent to an external AI service for a formatting task.

The distinction that matters

Masked text can survive in metadata, images, or earlier versions. Check the output file, not just the visible page.

Related terms

Where it is taught

Map where information goes before using a tool

Source and further reading

Sentence Transformers · Semantic search

The definition and example are written for this library. The link gives background, official documentation or legal authority as labelled. Legal scope depends on the jurisdiction and current text; product features depend on release and settings.

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