让词元边界随上下文自适应演化,提升语言模型表现
Contextual Morphogenesis in Large Language Models: A Novel Approach to Self-Organizing Token Representations
- 基于上下文依赖动态重组词元边界,实现自组织表征
- 在复杂语境下降低困惑度,同时保持表征稳定性
- 适合追求高精度与灵活性的语言模型研究者
词元表示影响语言模型的效率与适应性,但传统分词策略施加了固定的切分边界,无法随上下文关系动态调整。本文提出上下文形态发生(contextual morphogenesis),建立一种自组织机制,依据学习到的上下文依赖关系重构词元边界,使嵌入表示在迭代处理中逐步演化。实证评估表明,动态调整的分词可降低困惑度,同时保持表征稳定,尤其在语言结构复杂的领域中,静态分词难以捕捉细微依赖。自组织词元结构带来的计算开销虽有增加,但在优化分割更新效率的前提下仍处于可接受范围。跨不同语料库的对比分析显示,自适应分词在保持可解释性的同时提升了与上下文线索的一致性,强化了形态发生分割机制在提升预测准确率方面的潜力。稳定性分析证实,演化的词元结构在多种文本分布下保持一致的切分行为,确保表征调整具有语言学合理性。上下文形态发生对结构稳定性和预测性能的改进,凸显其作为传统分词替代方案的可行性。进一步计算效率分析建议,融合静态与动态分词的混合策略,可在保持推理效率的同时优化表征灵活性。
原文摘要 · Abstract (English)
Token representations influence the efficiency and adaptability of language models, yet conventional tokenization strategies impose rigid segmentation boundaries that do not adjust dynamically to evolving contextual relationships. The introduction of contextual morphogenesis establishes a self-organizing mechanism that restructures token boundaries based on learned contextual dependencies, allowing embeddings to evolve progressively across iterative processing steps. Empirical evaluations demonstrate that dynamically adjusted tokenization contributes to reductions in perplexity while maintaining representational stability, particularly in linguistically complex domains where static segmentation fails to capture nuanced dependencies. Computational trade-offs associated with self-organizing token structures indicate that additional processing overhead remains within feasible limits, provided that optimization strategies account for segmentation update efficiency. Comparative assessments across different linguistic corpora suggest that adaptive tokenization preserves interpretability while improving alignment with contextual cues, reinforcing the potential of morphogenetic segmentation mechanisms to refine predictive accuracy. Stability analyses confirm that evolving token structures maintain consistent segmentation behaviors across varied text distributions, ensuring that representational adaptations remain linguistically coherent. The effectiveness of contextual morphogenesis in refining structural stability and predictive performance highlights its viability as an alternative to traditional tokenization methods. Further analysis of computational efficiency considerations suggests that hybrid strategies integrating both static and dynamic segmentation techniques may offer a balanced approach to optimizing representational flexibility while maintaining inference efficiency.
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