WFGY/ProblemMap/GlobalFixMap/Multimodal_LongContext/signal-drop.md

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# Signal Drop — Guardrails and Fix Pattern
<details>
<summary><strong>🧭 Quick Return to Map</strong></summary>
<br>
> You are in a sub-page of **Multimodal_LongContext**.
> To reorient, go back here:
>
> - [**Multimodal_LongContext** — long-context reasoning across text, vision, and audio](./README.md)
> - [**WFGY Global Fix Map** — main Emergency Room, 300+ structured fixes](../README.md)
> - [**WFGY Problem Map 1.0** — 16 reproducible failure modes](../../README.md)
>
> Think of this page as a desk within a ward.
> If you need the full triage and all prescriptions, return to the Emergency Room lobby.
</details>
When multimodal sessions extend across long contexts, one or more modalities may **drop out entirely** or become invisible to the reasoning pipeline.
This creates “blind layers” where text, image, or audio cues vanish mid-sequence, leading to broken reasoning or silent hallucination.
---
## Symptoms of Signal Drop
- Model responds as if a modality was never provided.
- Visual reference ignored after ~2030 turns.
- Audio transcript included but not grounded in reasoning.
- Captions persist but semantic anchors drift apart.
- Silent failure: no error is thrown, yet cross-modal grounding is gone.
---
## Open these first
- Cross-modal stability: [Alignment Drift](./alignment-drift.md)
- Long-context melt: [Entropy Collapse](../MemoryLongContext/entropy-collapse.md)
- Boundary checks: [Boundary Fade](./boundary-fade.md) *(planned)*
- Retrieval schema: [Cross-Modal Trace](./cross-modal-trace.md)
- State fences: [Memory Coherence](../MemoryLongContext/memory-coherence.md)
---
## Fix in 60 seconds
1. **Detect silence**
- Log presence/absence of `{text, visual, audio}` per turn.
- If any modality = null for >2 steps, flag as drop.
2. **Inject continuity token**
- Add `mod_keepalive` in the system schema to enforce recall of modality.
- Force echo of modality presence in every reasoning header.
3. **Re-anchor references**
- If image or audio missing, insert placeholder with `ΔS=skip` instead of null.
- Prevent collapse by keeping λ_observe convergent.
4. **Stabilize joins**
- Split by `{text | image | audio}` sections.
- Clamp cross-joins with BBAM to stop runaway drift.
---
## Acceptance Targets
- **Coverage**: ≥ 0.70 for all active modalities.
- **ΔS(question, retrieved)** ≤ 0.45 even when one modality drops.
- **λ_observe** remains convergent across three paraphrases.
- **No silent modality loss** beyond two turns.
---
## Copy-paste prompt
```txt
You are running TXTOS + WFGY Problem Map.
Symptom: modality vanished (text, image, or audio).
Task: detect, re-anchor, and restore multimodal stability.
Protocol:
1. Log {text, visual, audio} presence each turn.
2. If any missing for >2 steps, insert placeholder `mod_keepalive`.
3. Require ΔS(question, retrieved) ≤ 0.45 across modalities.
4. Use BBAM for variance clamp, BBCR bridge if joins collapse.
5. Cite then answer; no orphan visual or audio references allowed.
````
---
### 🔗 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) | 1⃣ Download · 2⃣ Upload to your LLM · 3⃣ Ask “Answer using WFGY + \<your question>” |
| **TXT OS (plain-text OS)** | [TXTOS.txt](https://github.com/onestardao/WFGY/blob/main/OS/TXTOS.txt) | 1⃣ Download · 2⃣ Paste into any LLM chat · 3⃣ Type “hello world” — OS boots instantly |
---
<!-- WFGY_FOOTER_START -->
### Explore More
| Layer | Page | What its for |
| --- | --- | --- |
| ⭐ Proof | [WFGY Recognition Map](/recognition/README.md) | External citations, integrations, and ecosystem proof |
| ⚙️ Engine | [WFGY 1.0](/legacy/README.md) | Original PDF tension engine and early logic sketch (legacy reference) |
| ⚙️ Engine | [WFGY 2.0](/core/README.md) | Production tension kernel for RAG and agent systems |
| ⚙️ Engine | [WFGY 3.0](/TensionUniverse/EventHorizon/README.md) | TXT based Singularity tension engine (131 S class set) |
| 🗺️ Map | [Problem Map 1.0](/ProblemMap/README.md) | Flagship 16 problem RAG failure taxonomy and fix map |
| 🗺️ Map | [Problem Map 2.0](/ProblemMap/wfgy-rag-16-problem-map-global-debug-card.md) | Global Debug Card for RAG and agent pipeline diagnosis |
| 🗺️ Map | [Problem Map 3.0](/ProblemMap/wfgy-ai-problem-map-troubleshooting-atlas.md) | Global AI troubleshooting atlas and failure pattern map |
| 🧰 App | [TXT OS](/OS/README.md) | .txt semantic OS with fast bootstrap |
| 🧰 App | [Blah Blah Blah](/OS/BlahBlahBlah/README.md) | Abstract and paradox Q&A built on TXT OS |
| 🧰 App | [Blur Blur Blur](/OS/BlurBlurBlur/README.md) | Text to image generation with semantic control |
| 🏡 Onboarding | [Starter Village](/StarterVillage/README.md) | Guided entry point for new users |
If this repository helped, starring it improves discovery so more builders can find the docs and tools.
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<!-- WFGY_FOOTER_END -->