CLAIJun 22, 2025

$φ^{\infty}$: Clause Purification, Embedding Realignment, and the Total Suppression of the Em Dash in Autoregressive Language Models

arXiv:2506.18129v12 citationsh-index: 2
Originality Incremental advance
AI Analysis

This work addresses a critical vulnerability in foundation models with implications for AI safety and robust deployment, though it is incremental as it builds on existing methods for token-level mitigation.

The paper tackles the problem of em dash tokens causing recursive semantic drift and embedding space entanglement in autoregressive transformer language models, resulting in significant improvements in generation consistency and topic maintenance through a novel solution without requiring model retraining.

We identify a critical vulnerability in autoregressive transformer language models where the em dash token induces recursive semantic drift, leading to clause boundary hallucination and embedding space entanglement. Through formal analysis of token-level perturbations in semantic lattices, we demonstrate that em dash insertion fundamentally alters the model's latent representations, causing compounding errors in long-form generation. We propose a novel solution combining symbolic clause purification via the phi-infinity operator with targeted embedding matrix realignment. Our approach enables total suppression of problematic tokens without requiring model retraining, while preserving semantic coherence through fixed-point convergence guarantees. Experimental validation shows significant improvements in generation consistency and topic maintenance. This work establishes a general framework for identifying and mitigating token-level vulnerabilities in foundation models, with immediate implications for AI safety, model alignment, and robust deployment of large language models in production environments. The methodology extends beyond punctuation to address broader classes of recursive instabilities in neural text generation systems.

Foundations

The foundational work for this paper's niche, ranked by how specifically the neighbourhood builds on it — not by global fame.

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