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ColBERT

2 articles · Page 1 of 1
AI Engineer Programming
AI Engineer Programming
May 14, 2026 · Artificial Intelligence

RAG Retrieval: Comparing Bi-encoder and Cross-encoder Architectures

The article reviews the three‑step RAG pipeline, explains why retrieval quality hinges on fast, accurate semantic matching, contrasts Bi-encoder’s offline vector indexing and speed with Cross-encoder’s token‑level interaction and higher precision, and discusses hybrid solutions such as ColBERT and LLM rerankers with practical engineering guidelines.

Bi-EncoderColBERTCross-Encoder
0 likes · 10 min read
RAG Retrieval: Comparing Bi-encoder and Cross-encoder Architectures
Sohu Tech Products
Sohu Tech Products
Nov 6, 2024 · Artificial Intelligence

RAG2.0 Engine Design Challenges and Implementation

The talk outlines RAG2.0’s design challenges—low vector recall, complex documents, semantic gaps—and presents a two‑stage architecture using deep multimodal understanding and knowledge‑graph‑enhanced retrieval, detailing advanced chunking, multi‑index and multi‑path retrieval, efficient sorting models like ColBERT, and future multi‑modal and memory‑augmented agent directions.

ColBERTDelayed InteractionMulti-modal Processing
0 likes · 23 min read
RAG2.0 Engine Design Challenges and Implementation