# Kev LUX Places decision model by Yale Cultural Heritage AI

> Kev LUX Places adapters check place equivalence and parent links. Read their machine-consensus results, base requirements and limits.

Updated 2026-11-07 (Australia/Adelaide)

## Quick answers

### What is Kev LUX Places by Yale Cultural Heritage AI?

[Kev LUX Places](<https://decisionmodels.ai/models/lux-places>): Two Kev-4B adapters check whether linked authority records describe the same place and whether a declared parent contains a child place.

[Kev LUX Places facts](<https://decisionmodels.ai/models/lux-places>)

[Source](<https://huggingface.co/yale-cultural-heritage/kev-4b-lux-places-equivalence>)

### Who makes Kev LUX Places?

[Kev LUX Places](<https://decisionmodels.ai/models/lux-places>): Yale Cultural Heritage AI

[Kev LUX Places facts](<https://decisionmodels.ai/models/lux-places>)

[Source](<https://huggingface.co/yale-cultural-heritage/kev-4b-lux-places-equivalence>)

By Yale Cultural Heritage AI · Hugging Face package release: 2026-11-04 · OPEN

Two Kev-4B adapters check whether linked authority records describe the same place and whether a declared parent contains a child place. They supply pointer heads and calibration temperatures, with the Qwen3.5-4B base downloaded separately. The part-of adapter continues training from the equivalence adapter.

## Facts

- Inputs: Rendered authority records and fixed yes/no statements
- Package: LoRA adapters and pointer heads; separate 4B base
- Licence: Apache-2.0 tags on both cards

## Claims and sources

- **VENDOR-REPORTED**: The equivalence maker reports balanced accuracy 0.940 on 499 held-out decisions over 150 places. Labels retain agreement between Gemini and [Jev](<https://decisionmodels.ai/models/jev>) and were not checked by people, so this measures agreement with machine consensus. [source](<https://huggingface.co/yale-cultural-heritage/kev-4b-lux-places-equivalence>)
- **VENDOR-REPORTED**: The part-of card reports balanced accuracy 0.983 and Brier 0.014. Only six real negative links appear in its test split; synthetic negatives and authority hierarchy evidence limit conclusions about rare real errors. [source](<https://huggingface.co/yale-cultural-heritage/kev-4b-lux-places-part-of>)

## Links

- [Source: Equivalence card and adapter](<https://huggingface.co/yale-cultural-heritage/kev-4b-lux-places-equivalence>)
- [Source: Part-of card and adapter](<https://huggingface.co/yale-cultural-heritage/kev-4b-lux-places-part-of>)

## Related projects

No related projects are listed in the registry.