Defaults in Unification Grammar

Defaults in Unification Grammar
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统一语法中的默认值

DOI:
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发表时间:
1990
期刊:
Annual Meeting of the Association for Computational Linguistics
影响因子:
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通讯作者:
G. Bouma
G. Bouma
中科院分区:
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文献类型:
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作者:
G. Bouma

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由于语言充分性和语法组织的原因,在语法形式化中纳入缺省是很重要的。本文提出了一种统一文法中缺省信息的处理算法。该算法指定对特征结构的逻辑运算,仅将默认特征结构中不受非默认结构约束的那些部分与非默认结构合并。我们展示了缺省统一的各种语言应用。
Incorporation of defaults in grammar formalisms is important for reasons of linguistic adequacy and grammar organization. In this paper we present an algorithm for handling default information in unification grammar. The algorithm specifies a logical operation on feature structures, merging with the non-default structure only those parts of the default feature structure which are not constrained by the non-default structure. We present various linguistic applications of default unification.