{
  "id": "local_retrieval_v1",
  "description": "Baseline offline retrieval experiments using deterministic local embedding, vector search, and fake LLM adapters.",
  "metrics": {
    "k_values": [1, 3, 5]
  },
  "experiments": [
    {
      "name": "chunk_vector",
      "description": "Flat chunk index with vector retrieval.",
      "creation_settings": {
        "index_type": "chunk",
        "chunk_size": 180,
        "overlap": 30
      },
      "retrieval_settings": {
        "search_type": "vector",
        "top_k": 5,
        "query_rewrite": "off"
      }
    },
    {
      "name": "chunk_full_text",
      "description": "Flat chunk index with keyword/full-text retrieval.",
      "creation_settings": {
        "index_type": "chunk",
        "chunk_size": 180,
        "overlap": 30
      },
      "retrieval_settings": {
        "search_type": "full_text",
        "top_k": 5,
        "query_rewrite": "off"
      }
    },
    {
      "name": "chunk_hybrid",
      "description": "Flat chunk index with hybrid retrieval.",
      "creation_settings": {
        "index_type": "chunk",
        "chunk_size": 180,
        "overlap": 30
      },
      "retrieval_settings": {
        "search_type": "hybrid",
        "vector_weight": 0.65,
        "top_k": 5,
        "query_rewrite": "off"
      }
    },
    {
      "name": "parent_child_vector",
      "description": "Parent-child index with vector retrieval.",
      "creation_settings": {
        "index_type": "parent_child",
        "parent_chunk_size": 260,
        "child_chunk_size": 90,
        "overlap": 20
      },
      "retrieval_settings": {
        "search_type": "vector",
        "top_k": 5,
        "query_rewrite": "off"
      }
    },
    {
      "name": "qa_vector",
      "description": "QA index with deterministic local Q&A generation and vector retrieval.",
      "creation_settings": {
        "index_type": "qa",
        "chunk_size": 180,
        "overlap": 30,
        "qa_llm_model_uuid": "local-fake-llm",
        "questions_per_chunk": 1
      },
      "retrieval_settings": {
        "search_type": "vector",
        "top_k": 5,
        "query_rewrite": "off"
      }
    },
    {
      "name": "chunk_multi_query_hybrid",
      "description": "Flat chunk index with deterministic multi-query rewrite and hybrid retrieval.",
      "creation_settings": {
        "index_type": "chunk",
        "chunk_size": 180,
        "overlap": 30
      },
      "retrieval_settings": {
        "search_type": "hybrid",
        "vector_weight": 0.65,
        "top_k": 5,
        "query_rewrite": "multi_query",
        "rewrite_llm_model_uuid": "local-fake-llm"
      }
    }
  ]
}