Linear Adapters
A lightweight technique for optimizing embedding models in Retrieval Augmented Generation (RAG) pipelines without full retraining or re-embedding.
Key points:
- Solves domain-specific optimization challenges where base embedding models underperform in specialized contexts
- Achieves significant retrieval accuracy gains cost-effectively and efficiently
- Eliminates need for:
- Full retraining of large embedding models
- Re-embedding of entire knowledge bases
- Uses linear adapters as parameter-efficient updates (small, trainable layers added to existing models)
Source: 2026 04 14 Fine Tuning RAG Adam Lucek