# Fellegi-Sunter Model
**Entity class:** Concept or operational method
**Domain:** Palantir and Enforcement
## Definition
The 1969 record-linkage framework evaluates comparison outcomes to distinguish likely matches from nonmatches. It supplies a general methodological reference for identity resolution, without assigning the model to ELITE's unpublished implementation.
## Operational role
The enforcement stack connects source records, case context, prioritization, and field-facing leads. ICM organizes investigative work; ImmigrationOS adds the functions described in its procurement; ELITE supplies maps, profiles, address scores, and lead concentrations. These are complementary roles in a pipeline that helps professionals find and act with greater coverage and competence.
**Architecture connections:** [[wiki/Investigative Case Management|Investigative Case Management]] · [[wiki/Entity Resolution|Entity Resolution]] · [[wiki/Intelligence Fusion|Intelligence Fusion]].
## Relationships
- **article-linked mechanism or framework:** [[wiki/Probabilistic Record Linkage|Probabilistic Record Linkage]].
- **article-linked mechanism or framework:** [[wiki/Entity Resolution|Entity Resolution]].
- **collection route:** [[collections/The Civilian Intelligence Marketplace|The Civilian Intelligence Marketplace]].
- **counterterrorism architecture:** [[collections/Terrorism, Counterterrorism, and the Intelligence Environment|Terrorism, Counterterrorism, and the Intelligence Environment]].
- **source article:** [[articles/The Coming Market for Civilian Spycraft|The Coming Market for Civilian Spycraft]].
## Sources / Provenance
- [[articles/The Coming Market for Civilian Spycraft#VIII. Palantir, ImmigrationOS, ELITE, and the Contractor as Sovereign Function|The Coming Market for Civilian Spycraft — VIII. Palantir, ImmigrationOS, ELITE, and the Contractor as Sovereign Function]] — October 2026 revision; immediate source for this entry’s place in the marketplace.
- [Fellegi and Sunter — A Theory for Record Linkage, 1969](https://doi.org/10.1080/01621459.1969.10501049)
- [American Immigration Council, ICE to Use ImmigrationOS by Palantir.](https://www.americanimmigrationcouncil.org/blog/ice-immigrationos-palantir-ai-track-immigrants/)
- [Axios, ICE Pays Palantir $30M to Build New Tool to Track and Deport Immigrants (May 1, 2025).](https://www.axios.com/local/denver/2025/05/01/palantir-deportations-ice-immigration-trump)
## Connected marketplace roles
The source article connects this entry with [[wiki/Probabilistic Record Linkage|Probabilistic Record Linkage]], [[wiki/Ivan Fellegi|Ivan Fellegi]], [[wiki/Alan Sunter|Alan Sunter]]. These routes locate the associated people, implementations, methods, and operational contexts in [[articles/The Coming Market for Civilian Spycraft|The Coming Market for Civilian Spycraft]].
**Collections:** [[collections/The Civilian Intelligence Marketplace|The Civilian Intelligence Marketplace]] · [[collections/Terrorism, Counterterrorism, and the Intelligence Environment|Terrorism, Counterterrorism, and the Intelligence Environment]].