# Vector Index

> A data structure that organizes embedding vectors for fast nearest-neighbor lookup.

Record: `lexicon:vector-index`
Kind: artifact
Layer: [Correctness Core](https://banes-lab.com/records/layer/correctness-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-vector-index

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Training/Inference Separation](https://banes-lab.com/records/lexicon/training-inference-separation.md) and before [Retraining Triggers](https://banes-lab.com/records/lexicon/retraining-triggers.md).

## Category

- [Model Architecture](https://banes-lab.com/records/lexicon-category/model-architecture.md)

## Required by

- [Vector Search](https://banes-lab.com/records/architecture/vector-search.md)

## Linked from

- [Model Architecture](https://banes-lab.com/ontology/principles/architecture-category-model-architecture.md)
- [Model Architecture](https://banes-lab.com/ontology/lexicon/lexicon-category-model-architecture.md)