研究话语标记歧义与非标记信号的互动机制，揭示语言使用中的隐含逻辑。
Unpacking Ambiguity: The Interaction of Polysemous Discourse Markers and Non-DM Signals
- 用eRST框架定义话语标记歧义程度，分析其与非标记信号共现关系。
- 发现歧义标记常伴随更多样化的非标记信号，但总数量未必增加。
- 不同语体显著影响标记信号的互动模式，适合语用与语料库研究者参考。
话语标记（如'but'或'then'）对语篇连贯性至关重要，但常被非标记信号（如' in the morning'可等同于'then'）替代或共现，且二者均具歧义性（如'since'可表时间或因果）。标记与非标记信号之间的交互机制尚不明确，却对消歧至关重要。本文基于eRST框架，提出话语标记歧义的分级定义，并通过相关性与回归分析，考察歧义标记是否伴随更丰富多样的非标记信号。结果表明，歧义标记虽与更多样化的非标记信号共现，但总信号数量并不一定上升。此外，语体在塑造标记-信号互动模式中起显著作用。
原文摘要 · Abstract (English)
Discourse markers (DMs) like 'but' or 'then' are crucial for creating coherence in discourse, yet they are often replaced by or co-occur with non-DMs ('in the morning' can mean the same as 'then'), and both can be ambiguous ('since' can refer to time or cause). The interaction mechanism between such signals remains unclear but pivotal for their disambiguation. In this paper we investigate the relationship between DM polysemy and co-occurrence of non-DM signals in English, as well as the influence of genre on these patterns. Using the framework of eRST, we propose a graded definition of DM polysemy, and conduct correlation and regression analyses to examine whether polysemous DMs are accompanied by more numerous and diverse non-DM signals. Our findings reveal that while polysemous DMs do co-occur with more diverse non-DMs, the total number of co-occurring signals does not necessarily increase. Moreover, genre plays a significant role in shaping DM-signal interactions.
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