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    Decorative pattern
    Decorative pattern
    1. Home
    2. Concepts & Definitions
    3. Hybrid Search Techniques

    Hybrid Search Techniques

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

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    Websitewww.assembled.com
    PublishedMar 20, 2026

    Categories

    1 Item
    Concepts & Definitions

    Tags

    3 Items
    #Hybrid Search#Best Practices#Rag

    Similar Products

    6 result(s)
    Hybrid Search Best Practices

    Comprehensive guide to combining BM25 keyword search with vector semantic search using reciprocal rank fusion and reranking. Essential pattern for production RAG systems in 2026.

    Cascading Retrieval
    Featured

    Advanced retrieval approach combining dense vectors, sparse vectors, and reranking in a multi-stage pipeline, achieving up to 48% better performance than single-method retrieval.

    HybridRAG

    Next evolution in RAG systems that combines vector databases for semantic similarity with graph databases for relationship exploration and multi-hop reasoning.

    Hybrid Chunking Strategies

    Advanced document chunking approaches that combine multiple chunking methods (fixed-size, semantic, structural) to optimize retrieval in RAG systems. Hybrid strategies adapt to document characteristics for superior performance.

    Agentic RAG
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    An advanced RAG architecture where an AI agent autonomously decides which questions to ask, which tools to use, when to retrieve information, and how to aggregate results. Represents a major trend in 2026 for more intelligent and adaptive retrieval systems.

    Hybrid Search
    Featured

    A search architecture that combines dense vector embeddings (semantic search) with sparse representations like BM25 (lexical search) to achieve better overall search quality. The industry standard approach for production RAG systems in 2026.

    Overview

    Hybrid search combines vector and keyword search for better accuracy than either alone.

    Fusion Methods

    • Reciprocal Rank Fusion (RRF)
    • Weighted combination
    • Reranking

    Best Practices

    • Start with RRF
    • 60-40 vector-keyword weight
    • Apply reranking

    Performance

    10-30% recall improvement