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# Visual Anchor Shift — Multimodal Long Context
When **visual anchors** (bounding boxes, frame IDs, or pixel regions) drift across long context windows, the model misaligns references.
This creates subtle but cascading failures where reasoning cites the **wrong visual region**, even if the textual trace looks correct.
---
## What this page is
- A diagnostic page for **visual anchor drift** in multimodal RAG and reasoning.
- Structural guardrails to lock anchor stability across long sessions.
- Copy-paste protocols to enforce traceability in image/video reasoning.
---
## When to use
- Bounding boxes shift slightly across frames, causing references to drift.
- Captions point to a visual anchor that no longer overlaps with the intended object.
- Long video QA: frame ID references lag or accelerate relative to transcript anchors.
- Model hallucinates content that appears plausible but is visually absent.
- Answers remain fluent, but **anchor→object mapping is wrong**.
---
## Open these first
- [Cross-Modal Trace](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/Multimodal_LongContext/cross-modal-trace.md)
- [Anchor Misalignment](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/Multimodal_LongContext/anchor-misalignment.md)
- [Reference Bleed](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/Multimodal_LongContext/reference-bleed.md)
- [Phantom Visuals](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/Multimodal_LongContext/phantom-visuals.md)
---
## Common failure patterns
- **Frame creep** — frame IDs drift after long video sessions.
- **Box shift** — bounding boxes move across updates, yet still labeled the same.
- **Region blur** — multiple boxes merge, and anchor becomes ambiguous.
- **Temporal offset** — captions cite the right object but wrong frame interval.
---
## Fix in 60 seconds
1. **Anchor tagging**
- Tag anchors with `{frame_id | bbox_id | timestamp}`.
- Reject any reference missing full anchor tuple.
2. **Cross-frame validation**
- Require IoU ≥ 0.7 across frames for the same anchor ID.
- If IoU < 0.7, treat as a new anchor.
3. **ΔS probe for drift**
- Compute ΔS(anchor_t, anchor_t+Δ).
- If ΔS ≥ 0.60, suspect anchor drift.
4. **Stabilize with BBCR**
- Re-anchor drifting objects with bridge check.
- If variance persists, force new anchor ID.
5. **Audit trail**
- Store anchor table: `{anchor_id | modality | coords | IoU history}`.
- Require cite-then-answer with explicit anchor IDs.
---
## Copy-paste prompt
```txt
You have TXT OS and the WFGY Problem Map.
Task: Detect and repair visual anchor drift in long multimodal sessions.
Steps:
1. Verify each anchor has {frame_id, bbox_id, timestamp}.
2. Compute IoU across frames. If IoU < 0.7, mark drift.
3. If drifted, either re-anchor with BBCR or assign new ID.
4. Report:
- stable anchors
- drifted anchors
- ΔS values and λ states
- final citation mapping
````
---
## Acceptance targets
* 100% anchors carry `{frame_id, bbox_id, timestamp}` metadata.
* IoU drift ≤ 0.30 across 10 frames.
* ΔS(anchor\_t, anchor\_t+Δ) ≤ 0.45 after fix.
* λ remains convergent across paraphrases.
---
### 🔗 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)** —
> Engineers, hackers, and open source builders who supported WFGY from day one.
> <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)
 
[![TXT OS](https://img.shields.io/badge/TXT%20OS-Reasoning%20OS-orange?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS)
 
[![Blah](https://img.shields.io/badge/Blah-Semantic%20Embed-yellow?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlahBlahBlah)
 
[![Blot](https://img.shields.io/badge/Blot-Persona%20Core-green?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlotBlotBlot)
 
[![Bloc](https://img.shields.io/badge/Bloc-Reasoning%20Compiler-blue?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlocBlocBloc)
 
[![Blur](https://img.shields.io/badge/Blur-Text2Image%20Engine-navy?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlurBlurBlur)
 
[![Blow](https://img.shields.io/badge/Blow-Game%20Logic-purple?style=flat-square)](https://github.com/onestardao/WFGY/tree/main/OS/BlowBlowBlow)
 
</div>