WFGY/ProblemMap/GlobalFixMap/Multimodal_LongContext/echo-loop.md

Echo Loop — Guardrails and Fix Pattern

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• Multimodal_LongContext — long-context reasoning across text, vision, and audio
• WFGY Global Fix Map — main Emergency Room, 300+ structured fixes
• WFGY Problem Map 1.0 — 16 reproducible failure modes

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When multimodal systems run across long contexts, sometimes the same visual, caption, or audio snippet gets echoed back repeatedly instead of advancing reasoning.
This creates “semantic stutter” where the model hallucinates progress but actually cycles on stale content.

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Symptoms of Echo Loop

• Captions or transcripts repeated across multiple turns without update.
• Visual or audio reference echoed verbatim despite new input.
• Model appears to “stall” on the same anchor, ignoring user’s next steps.
• ΔS values stay flat across paraphrases, indicating semantic freeze.
• Users perceive output as verbose filler with no new reasoning.

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Open these first

• Attention variance clamp: Entropy Collapse
• Context drift and chain failure: Context Drift
• Cross-modal sync hazards: Sync Loop
• Traceability schema: Cross-Modal Trace
• Session fences: Memory Coherence

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Fix in 60 seconds

1. Detect stutter

   • If identical snippet ID repeats >2 times without anchor update, flag echo-loop.
   • Log ΔS and λ across three turns; flat line = freeze.

2. Force anchor refresh

   • Require anchor_rev++ with each new modality.
   • If missing, insert continuity token mod_refresh.

3. Break the loop

   • Clamp with BBAM to suppress repeated variance.
   • Insert BBCR bridge node to force new semantic branch.

4. Audit citations

   • Require unique snippet IDs in each new step.
   • If repeated without anchor shift, reject and re-request content.

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Acceptance Targets

• ΔS(question, retrieved) ≤ 0.45, with downward slope across steps.
• No modality snippet echoed more than twice consecutively.
• λ_observe convergent across three paraphrases.
• Anchor IDs strictly monotonic (anchor_rev increments).

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Copy-paste prompt

You are running TXTOS + WFGY Problem Map.

Symptom: repeated captions or snippets, model is “stuck in loop.”

Protocol:
1. Detect repeats >2 turns → flag echo-loop.
2. Require anchor_rev increment per modality.
3. Insert mod_refresh token if anchor missing.
4. Apply BBAM clamp and BBCR bridge to break loop.
5. Verify ΔS downward trend across turns.

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Explore More

Module	Description	Link
WFGY Core	Canonical framework entry point	View
Problem Map	Diagnostic map and navigation hub	View
Tension Universe Experiments	MVP experiment field	View
Recognition	Where WFGY is referenced or adopted	View
AI Guide	Anti-hallucination reading protocol for tools	View

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