The effectiveness of the retrieval stage in a Retrieval-Augmented Generation system is foundational. The precision of this stage, where relevant context is fetched, directly influences the performance of the subsequent generation phase. This chapter details advanced methods to enhance this component, ensuring your RAG system sources the most accurate and pertinent information.
You will learn to:
By mastering these techniques, you will be able to significantly improve the relevance and accuracy of the information supplied to the generator in your RAG systems.
2.1 Domain-Specific Fine-tuning of Embedding Models
2.2 Hybrid Search: Combining Dense and Sparse Retrievers
2.3 Advanced Re-ranking Architectures for Relevance
2.4 Query Augmentation: Expansion and Transformation
2.5 Optimizing Chunking Strategies for Diverse Data Sources
2.6 Advanced Document Representations: Multi-vector and ColBERT
2.7 Integrating Knowledge Graphs for Enhanced Retrieval
2.8 Active Learning for Retriever Improvement
2.9 Hands-on: Implementing and Evaluating Advanced Re-ranking
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