Hybrid Chunking Strategies

The process of determining optimal text segment sizes for embedding and retrieval in vector databases. Chunk size significantly impacts RAG quality, balancing between capturing complete context (larger chunks) and retrieval precision (smaller chunks), typically ranging from 256 to 1024 tokens.

LangChain's hierarchical text chunking strategy achieving 85-90% accuracy by recursively splitting using progressively finer separators to preserve semantic boundaries.

Techniques for managing limited LLM context windows in RAG systems, including chunk selection, summarization, and iterative retrieval. As context windows fill with retrieved documents, strategies ensure the most relevant information reaches the model while respecting token limits.

An advanced RAG chunking strategy that uses LLMs to dynamically determine optimal document splitting based on semantic meaning and content structure. Agentic chunking analyzes document characteristics and adapts the chunking approach per document for superior retrieval accuracy.

A RAG enhancement technique from Anthropic that adds chunk-specific explanatory context to each document chunk before embedding. Contextual Retrieval reduces retrieval failure rates by 49% and improves accuracy by 67% compared to traditional RAG methods.

Best practices for combining vector and keyword search using RRF and weighted fusion for improved retrieval accuracy in RAG systems.