--retrieval-strategy <strategy>
# or
--retrieval <strategy>

# Default - simple vector similarity
praisonai knowledge query "What is Python?" --retrieval basic

# Multiple query variations + RRF merging
praisonai knowledge query "What is Python?" --retrieval fusion

# Follow references between chunks
praisonai knowledge query "Explain the architecture" --retrieval recursive

# Merge related chunks for context
praisonai knowledge query "Summarize the document" --retrieval auto_merge

# Fusion retrieval with reranking
praisonai knowledge query "Compare Python and Java" \
  --retrieval fusion \
  --reranker simple

# Auto-merge with sub-question decomposition
praisonai knowledge query "What are the pros and cons?" \
  --retrieval auto_merge \
  --query-mode sub_question

# Complete RAG pipeline
praisonai knowledge query "How to deploy to production?" \
  --vector-store chroma \
  --retrieval fusion \
  --reranker simple \
  --index-type hybrid \
  --query-mode default