1  ---
 2  title: "Advanced RAG Techniques"
 3  id: advanced-rag-techniques
 4  slug: "/advanced-rag-techniques"
 5  ---
 6  
 7  # Advanced RAG Techniques
 8  
 9  This section of documentation talks about advanced RAQ techniques you can implement with Haystack.
10  
11  Read more about [Hypothetical Document Embeddings (HyDE)](advanced-rag-techniques/hypothetical-document-embeddings-hyde.mdx),
12  
13  or check out one of our cookbooks 🧑‍🍳:
14  
15  - [Using Hypothetical Document Embedding (HyDE) to Improve Retrieval](https://haystack.deepset.ai/cookbook/using_hyde_for_improved_retrieval)
16  - [Query Decomposition and Reasoning](https://haystack.deepset.ai/cookbook/query_decomposition)
17  - [Improving Retrieval by Embedding Meaningful Metadata](https://haystack.deepset.ai/cookbook/improve-retrieval-by-embedding-metadata)
18  - [Query Expansion](https://haystack.deepset.ai/cookbook/query-expansion)
19  - [Automated Structured Metadata Enrichment](https://haystack.deepset.ai/cookbook/metadata_enrichment)
20  - [Auto-Merging and Hierarchical Document Retrieval](https://haystack.deepset.ai/cookbook/auto_merging_retriever)