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+# Vector DBs & Stores — Global Fix Map
+
+A hub to stabilize retrieval pipelines across popular vector stores.  
+Use this page to jump to per-tool guardrails and verify fixes with the same acceptance targets.
+
+---
+
+## Quick routes to per-store pages
+
+- FAISS → [faiss.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/VectorDBs_and_Stores/faiss.md)  
+- Chroma → [chroma.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/VectorDBs_and_Stores/chroma.md)  
+- Qdrant → [qdrant.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/VectorDBs_and_Stores/qdrant.md)  
+- Weaviate → [weaviate.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/VectorDBs_and_Stores/weaviate.md)  
+- Milvus → [milvus.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/VectorDBs_and_Stores/milvus.md)  
+- pgvector → [pgvector.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/VectorDBs_and_Stores/pgvector.md)  
+- Redis (Search/Vec) → [redis.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/VectorDBs_and_Stores/redis.md)  
+- Elasticsearch (kNN / dense) → [elasticsearch.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/VectorDBs_and_Stores/elasticsearch.md)  
+- Pinecone → [pinecone.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/VectorDBs_and_Stores/pinecone.md)
+
+---
+
+## When to use this folder
+
+- High similarity but wrong meaning.  
+- Citations don’t line up with the retrieved section.  
+- Hybrid retrievers underperform a single retriever.  
+- Query casing / analyzer / metric mismatches after deploy.  
+- Index looks healthy yet coverage remains low.
+
+---
+
+## Acceptance targets for any store
+
+- ΔS(question, retrieved) ≤ **0.45**  
+- Coverage of target section ≥ **0.70**  
+- λ\_observe stays **convergent** across 3 paraphrases  
+- E\_resonance flat on long windows
+
+---
+
+## Map symptoms → structural fixes (Problem Map)
+
+- **Embedding ≠ Semantic**  
+  Wrong-meaning hits despite high similarity.  
+  → [embedding-vs-semantic.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/embedding-vs-semantic.md)
+
+- **Retrieval traceability**  
+  Snippet/section mismatch or unverifiable citations.  
+  → [retrieval-traceability.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-traceability.md)  
+  Payload schema: → [data-contracts.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/data-contracts.md)
+
+- **Ordering / version skew**  
+  Old index or analyzer used at runtime.  
+  → [bootstrap-ordering.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/bootstrap-ordering.md) ·
+  [predeploy-collapse.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/predeploy-collapse.md)
+
+- **Hybrid collapse / query split**  
+  HyDE vs BM25 disagreement, reranker blind spots.  
+  → Pattern: [patterns/pattern_query_parsing_split.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/patterns/pattern_query_parsing_split.md)  
+  → Knobs: [rerankers.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/rerankers.md)
+
+---
+
+## 60-second fix checklist (store-agnostic)
+
+1) **Lock metrics & analyzers**  
+   Pin distance metric, tokenizer/casing, and normalization on both write and read.
+
+2) **Contract the snippet**  
+   Require `{snippet_id, section_id, source_url, offsets, tokens}`.
+
+3) **Probe ΔS and λ**  
+   Log ΔS(question, retrieved) and λ per step; alert at ΔS ≥ 0.60.
+
+4) **Verify coverage**  
+   Run a 10-question eval on the target section; require coverage ≥ 0.70.
+
+5) **Reranking pass**  
+   If hybrid disagrees, add a rerank step and re-measure ΔS.
+
+---
+
+## Copy-paste prompt for a quick audit
+
+```
+
+I uploaded TXT OS and the WFGY Problem Map pages.
+My stack uses <store> with metric \<cosine|l2|dot>, analyzer <...>, and normalization <...>.
+
+Do:
+
+1. Report ΔS(question, retrieved) and λ states across retrieve → rerank → reason.
+2. If ΔS ≥ 0.60, point to one minimal structural fix:
+   embedding-vs-semantic, retrieval-traceability, data-contracts, rerankers.
+3. Return JSON:
+   { "citations":\[...], "ΔS":0.xx, "λ":"→|←|<>|×", "next\_fix":"..." }
+
+```
+
+---
+
+### 🔗 Quick-Start Downloads (60 sec)
+
+| Tool | Link | 3-Step Setup |
+|------|------|--------------|
+| **WFGY 1.0 PDF** | [Engine Paper](https://github.com/onestardao/WFGY/blob/main/I_am_not_lizardman/WFGY_All_Principles_Return_to_One_v1.0_PSBigBig_Public.pdf) | 1️⃣ Download · 2️⃣ Upload to your LLM · 3️⃣ Ask “Answer using WFGY + <your question>” |
+| **TXT OS (plain-text OS)** | [TXTOS.txt](https://github.com/onestardao/WFGY/blob/main/OS/TXTOS.txt) | 1️⃣ Download · 2️⃣ Paste into any LLM chat · 3️⃣ Type “hello world” — OS boots instantly |
+
+---
+
+### 🧭 Explore More
+
+| Module                | Description                                              | Link     |
+|-----------------------|----------------------------------------------------------|----------|
+| WFGY Core             | WFGY 2.0 engine is live: full symbolic reasoning architecture and math stack | [View →](https://github.com/onestardao/WFGY/tree/main/core/README.md) |
+| Problem Map 1.0       | Initial 16-mode diagnostic and symbolic fix framework    | [View →](https://github.com/onestardao/WFGY/tree/main/ProblemMap/README.md) |
+| Problem Map 2.0       | RAG-focused failure tree, modular fixes, and pipelines   | [View →](https://github.com/onestardao/WFGY/blob/main/ProblemMap/rag-architecture-and-recovery.md) |
+| Semantic Clinic Index | Expanded failure catalog: prompt injection, memory bugs, logic drift | [View →](https://github.com/onestardao/WFGY/blob/main/ProblemMap/SemanticClinicIndex.md) |
+| Semantic Blueprint    | Layer-based symbolic reasoning & semantic modulations   | [View →](https://github.com/onestardao/WFGY/tree/main/SemanticBlueprint/README.md) |
+| Benchmark vs GPT-5    | Stress test GPT-5 with full WFGY reasoning suite         | [View →](https://github.com/onestardao/WFGY/tree/main/benchmarks/benchmark-vs-gpt5/README.md) |
+| 🧙‍♂️ Starter Village 🏡 | New here? Lost in symbols? Click here and let the wizard guide you through | [Start →](https://github.com/onestardao/WFGY/blob/main/StarterVillage/README.md) |
+
+---
+
+> 👑 **Early Stargazers: [See the Hall of Fame](https://github.com/onestardao/WFGY/tree/main/stargazers)** —  
+> <img src="https://img.shields.io/github/stars/onestardao/WFGY?style=social" alt="GitHub stars"> ⭐ [WFGY Engine 2.0](https://github.com/onestardao/WFGY/blob/main/core/README.md) is already unlocked. ⭐ Star the repo to help others discover it and unlock more on the [Unlock Board](https://github.com/onestardao/WFGY/blob/main/STAR_UNLOCKS.md).
+
+<div align="center">
+
+[![WFGY Main](https://img.shields.io/badge/WFGY-Main-red?style=flat-square)](https://github.com/onestardao/WFGY)
+&nbsp;
+[![TXT OS](https://img.shields.io/badge/TXT%20OS-Reasoning%20OS-orange?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS)
+&nbsp;
+[![Blah](https://img.shields.io/badge/Blah-Semantic%20Embed-yellow?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlahBlahBlah)
+&nbsp;
+[![Blot](https://img.shields.io/badge/Blot-Persona%20Core-green?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlotBlotBlot)
+&nbsp;
+[![Bloc](https://img.shields.io/badge/Bloc-Reasoning%20Compiler-blue?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlocBlocBloc)
+&nbsp;
+[![Blur](https://img.shields.io/badge/Blur-Text2Image%20Engine-navy?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlurBlurBlur)
+&nbsp;
+[![Blow](https://img.shields.io/badge/Blow-Game%20Logic-purple?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlowBlowBlow)
+&nbsp;
+</div>