用依赖信息提升语义角色标注效率,速度提升10倍且结构更清晰
Revisiting Semantic Role Labeling: Efficient Structured Inference with Dependency-Informed Analysis

- 基于编码器的新型框架,结合依赖关系增强结构推理
- BERT-base下性能相当,RoBERTa/DeBERTa进一步提升F1
- 适合需要可解释结构的多语言语义分析任务
语义角色标注(SRL)提供谓词-论元结构的显式表示,捕捉谁对谁做了什么等语言学关系。尽管大语言模型(LLM)主导近期NLP进展,但其常依赖隐式语义表征,缺乏显式结构约束与系统性解释机制。传统SRL系统多依赖AllenNLP,但该框架已于2022年12月进入维护模式,难以兼容新兴编码器架构与现代推理需求。本文重新审视结构化SRL建模,提出一种现代化的编码器基础框架,在保持显式谓词-论元结构的同时,实现推理速度提升10倍。使用BERT-base时性能相当,而RoBERTa与DeBERTa在此框架下进一步提升F1得分。通过依赖信息引导的诊断方法,分析跨度级不一致问题,并对LLM在依赖信息下的表征行为进行层级分析。结果表明,依赖线索主要提升结构稳定性。最后,展示了该框架的显式结构如何支持多语言SRL迁移作为下游应用。
原文摘要 · Abstract (English)
Semantic Role Labeling (SRL) provides an explicit representation of predicate-argument structure, capturing linguistically grounded relations such as who did what to whom. While recent NLP progress has been dominated by large language models (LLMs), these systems often rely on implicit semantic representations, often lacking explicit structural constraints and systematic explanatory mechanisms. Traditionally, SRL systems have often relied on AllenNLP; however, the framework entered maintenance mode in December 2022, limiting compatibility with evolving encoder architectures and modern inference requirements. We revisit structured SRL modeling, introducing a modernized encoder-based framework that preserves explicit predicate-argument structure while enabling inference 10 times faster. Using BERT-base, the model attains comparable predictive performance, and RoBERTa and DeBERTa further improve F1 performance within the same framework. We adopt a dependency-informed diagnostic methodology to characterize span-level inconsistencies and conduct a representation-level analysis of LLM behavior under dependency-informed structural signals. Results indicate that dependency cues primarily improve structural stability. Finally, we illustrate how the framework's explicit predicate-argument structure can support multilingual SRL projection as a downstream application.
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