Role and Reference Grammar (RRG) (Foley and Van Valin, 1984; Van Valin and LaPolla, 1997; Van Valin, 2005) is typologically general, semantically-driven syntactic framework. A major focus of RRG is a fine-grained typology of form-to-meaning mapping, emphasizing the syntactic and semantic structure of complex event descriptions. I introduce a constraint-based typed feature structure variant of RRG which exploits RRG's semantically-motivated syntactic backbone: the Layered Structure of the Clause (LSC). Each layer in the LSC is represented as a subtype of sign, and the unique combination of syntactic and semantic properties possessed by each layer is captured by a set of constraints on the appropriate sign subtype. Sentences are incrementally built up from predicates (represented semantically as event frames) to propositions using constructions to pass and combine information through the different layers (and juncture types) in the LSC. An English fragment of this constraint-based RRG is implemented using the Attribute Logic Engine (Carpenter, 1992).
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机译：作用和参考语法（RRG）（Foley And Van Valin，1984; Van Valin和Lapolla，1997; Van Valin，2005）是一种类型的语义驱动的句法框架。 RRG的主要焦点是一种细粒度的形式映射类型，强调复杂事件描述的句法和语义结构。我介绍了一个基于约束的键入的RRG的特征结构变体，它利用RRG的语义动机句法骨干：子句（LSC）的分层结构。 LSC中的每个层表示为符号的子类型，并且每个层所拥有的句法和语义属性的唯一组合被适当的符号子类型上的一组约束捕获。句子逐步地从谓词（语义上表示为事件帧），以使用构造来通过并通过LSC中的不同层（和接合类型）来分配信息的命题。使用属性逻辑引擎（Carpenter，1992）实现了基于约束的RRG的英语片段。
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