arXiv:2502.05395cs.CL2025-02

通过分层词嵌入投影,提升大模型多尺度语义表示能力。

Hierarchical Lexical Manifold Projection in Large Language Models: A Novel Mechanism for Multi-Scale Semantic Representation

  • 设计分层词嵌入投影机制,实现词元在结构化流形上的映射。
  • 在多个语言任务中优于传统表示,准确率提升且计算开销更低。
  • 适合需要精细语义对齐的场景,如专业领域文本处理。

将结构化的分层嵌入集成到基于Transformer的架构中,提出一种精细化的词汇表征方法,在不牺牲计算效率的前提下,保留多尺度语义关系。通过将词元映射到结构化流形上的投影机制,提升了词汇对齐效果,增强了词表示在多样语言任务中的适应性。结构化编码框架确保分层嵌入在不同抽象层级间保持一致性,实现局部句法特征与全局语义结构间的稳定过渡。实验评估表明,分层嵌入在语言基准测试中持续优于传统词表示,提升准确率的同时保持较低计算开销。跨多个领域的对比分析显示,分层嵌入在特定语言应用中能有效维持上下文一致性,尤其在需要结构化词汇对齐的任务中表现突出。统计评估进一步证明,分层嵌入在扰动条件下具备更强鲁棒性,确保语言结构在对抗性文本修改下仍保持稳定。将分层投影与Transformer注意力机制结合,实现更优的上下文自适应,使词元表示能动态响应不同语言分布。分层嵌入的优化组织提升了词汇建模的可解释性,促进在多样化文本处理任务中的泛化能力。

原文摘要 · Abstract (English)

The integration of structured hierarchical embeddings into transformer-based architectures introduces a refined approach to lexical representation, ensuring that multi-scale semantic relationships are preserved without compromising computational efficiency. A projection mechanism that maps tokens onto a structured manifold provides improved lexical alignment, enhancing the adaptability of word representations across diverse linguistic tasks. The structured encoding framework ensures that hierarchical embeddings maintain coherence across varying abstraction levels, allowing for stable transitions between localized syntactic features and global semantic structures. Experimental evaluations indicate that hierarchical embeddings consistently outperform conventional token representations, improving accuracy in linguistic benchmarks while maintaining lower computational overhead. Comparative analysis across multiple domains highlights the ability of hierarchical embeddings to retain contextual consistency, particularly in specialized language applications where structured lexical alignment is essential. Statistical assessments further demonstrate that hierarchical embeddings exhibit enhanced robustness under perturbation conditions, ensuring that linguistic structures remain stable across adversarial text modifications. The integration of hierarchical projections with transformer attention mechanisms enables improved contextual adaptation, ensuring that token representations are dynamically adjusted based on varying linguistic distributions. The refined hierarchical organization of embeddings provides greater interpretability in lexical modeling, facilitating enhanced generalization capabilities across diverse text processing tasks.

分层嵌入语义表示Transformer可解释性

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