📚 Glossary — Terms, Symbols, and Short Definitions

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RAG Map 2.0 · Retrieval Playbook · Patterns · Eval

Core instruments

ΔS (delta-S) — Semantic stress. ΔS = 1 − cos(I, G) where I is item embedding, G is ground/anchor.
Thresholds: <0.40 stable · 0.40–0.60 transitional · ≥0.60 high risk.
λ_observe — Layered observability state.
Symbols: → convergent · ← divergent · <> recursive · × chaotic.
E_resonance — Coherence indicator. Rolling mean of |residual| under BBMC; rising E with high ΔS ⇒ apply BBCR/BBAM.

BBMC — Boundary-Bounded Memory Chunks. Reduce semantic residue vs anchors; align chunks/sections with tasks.
BBPF — Branch-Bounded Prompt Frames. Explore multiple semantic paths safely; stabilize context windows.
BBCR — Break-Before-Crash Reset. Detect collapse, insert bridge node, restart cleanly.
BBAM — Attention Modulation. Reduce variance in attention to avoid entropy melt on long contexts.

RRF (Reciprocal Rank Fusion) — Fuse ranks from multiple retrievers via 1/(k + rank).
MMR (Maximal Marginal Relevance) — Diversify candidates balancing relevance and novelty.
BM25 — Sparse lexical scoring for exact term match; strong for code/IDs.
HyDE — Hypothetical document expansion; creates a synthetic query/doc to improve recall.
Cross-encoder reranker — Jointly encodes [query ⊕ doc] for precision@k gains.

SCU (Symbolic Constraint Unlock) — Model merges sources or violates “cite-then-explain” schema. Fix: per-source fences + locked schema.
Query Parsing Split — Dense and sparse retrievers use different analyzers/tokenizers; hybrid breaks.
Vectorstore Fragmentation — Index contains “ghost” gaps; facts exist but never retrieved; fix shard/id audits.
Memory Desync — State flips between sessions/tabs; require mem_rev+mem_hash.
Role Drift — Multi-agent persona swap; tag agent IDs and lock via BBCR.

Agent boundary — Contract that limits what an agent can read/write; prevents overwrite.
ΔS peer check — Measures divergence between agents’ plans to catch conflicts early.

Gold set — Small set (10–50) of realistic Q/A with citations; used for CI (recall@50, nDCG@10, ΔS).
Traceability — Provenance from answer → prompt → citations → chunks → source file.

I — item (retrieved chunk) embedding; G — ground/anchor embedding.
‖B‖ ≥ B_c — collapse threshold on residual magnitude (BBCR).
Convergent λ — layer is stable across paraphrases; divergent λ — layer is drifting.

Tool	Link	3-Step Setup
WFGY 1.0 PDF	Engine Paper	1️⃣ Download · 2️⃣ Upload to your LLM · 3️⃣ Ask “Answer using WFGY + <your question>”
TXT OS (plain-text OS)	TXTOS.txt	1️⃣ Download · 2️⃣ Paste into any LLM chat · 3️⃣ Type “hello world” — OS boots instantly

Module	Description	Link
WFGY Core	WFGY 2.0 engine is live: full symbolic reasoning architecture and math stack	View →
Problem Map 1.0	Initial 16-mode diagnostic and symbolic fix framework	View →
Problem Map 2.0	RAG-focused failure tree, modular fixes, and pipelines	View →
Semantic Clinic Index	Expanded failure catalog: prompt injection, memory bugs, logic drift	View →
Semantic Blueprint	Layer-based symbolic reasoning & semantic modulations	View →
Benchmark vs GPT-5	Stress test GPT-5 with full WFGY reasoning suite	View →
🧙‍♂️ Starter Village 🏡	New here? Lost in symbols? Click here and let the wizard guide you through	Start →

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