Michele LaurelliBlog

Bi-encoder

Bi-encoder: An architecture that encodes queries and documents separately into vectors comparable by similarity. Document embeddings can be precomputed and indexed, enabling fast large-scale retrieval. Its weaker interaction compared with a cross-encoder can reduce precision on ambiguous cases. Examples include Sentence-BERT, Offline indexing, Low-latency dense retrieval.

In italiano: Bi-EncoderLegge I · Embedding, feature e spazi vettoriali

Document embeddings can be precomputed and indexed, enabling fast large-scale retrieval. Its weaker interaction compared with a cross-encoder can reduce precision on ambiguous cases.

Examples

  • Sentence-BERT
  • Offline indexing
  • Low-latency dense retrieval