Title
Lexicalization and Generative Power in CCG
Abstract
The weak equivalence of Combinatory Categorial Grammar CCG and Tree-Adjoining Grammar TAG is a central result of the literature on mildly context-sensitive grammar formalisms. However, the categorial formalism for which this equivalence has been established differs significantly from the versions of CCG that are in use today. In particular, it allows restriction of combinatory rules on a per grammar basis, whereas modern CCG assumes a universal set of rules, isolating all cross-linguistic variation in the lexicon. In this article we investigate the formal significance of this difference. Our main result is that lexicalized versions of the classical CCG formalism are strictly less powerful than TAG.
Year
DOI
Venue
2015
10.1162/COLI_a_00219
Computational Linguistics
Keywords
Field
DocType
computer and information science
Lexicalization,Computer science,Grammar,Emergent grammar,Equivalence (measure theory),Combinatory categorial grammar,Artificial intelligence,Categorial grammar,Natural language processing,Generative grammar,Mildly context-sensitive grammar formalism
Journal
Volume
Issue
ISSN
41
2
0891-2017
Citations 
PageRank 
References 
5
0.43
6
Authors
3
Name
Order
Citations
PageRank
Marco Kuhlmann130923.06
Alexander Koller2506.55
Giorgio Satta390290.85