Default Representation in Constraint-based Frameworks

Default Representation in Constraint-based Frameworks
复制标题

基于约束的框架中的默认表示

DOI:
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发表时间:
1999
影响因子:
9.3
通讯作者:
Ann A. Copestake
Ann A. Copestake
中科院分区:
计算机科学3区
文献类型:
--
作者:
A. Lascarides;Ann A. Copestake

文献摘要

被引文献

相似文献

缺省统一已在几种语言学应用中使用。它们中的大多数都使用了元级别的默认值,作为扩展描述语言的一部分。我们建议,允许默认统一是一个完全集成的一部分,一个类型化的功能结构系统需要默认统一是一个二进制的,顺序独立的功能,使它获得的清晰度和声明性熟悉正常统一为基础的框架。此外,为了尊重默认值的行为,默认统一应该允许更通用类型上的默认重入和值被更特定类型上冲突的默认信息覆盖。我们定义我们认为是第一个版本的默认统一,以完全满足这些标准,并认为它可以提高一系列现象的句法,语义和词汇语用界面的代表性。
Default unification has been used in several linguistic applications. Most of them have utilized defaults at a metalevel, as part of an extended description language. We propose that allowing default unification to be a fully integrated part of a typed feature structure system requires default unification to be a binary, order independent function, so that it acquires the perspicuity and declarativity familiar from normal unification-based frameworks. Furthermore, in order to respect the behaviour of defaults, default unification should allow default reentrancies and values on more general types to be overridden by conflicting default information on more specific types. We define what we believe is the first version of default unification to fully satisfy these criteria, and argue that it can improve the representation of a range of phenomena in syntax, semantics and the lexico-pragmatic interface.