TY  - INPR
A1  - Kallmeyer, Laura
A2  - Abeillé, Anne
A2  - Becker, Tilman
A2  - Satta, Giorgio
A2  - Vijay-Shanker, K.
T1  - A hierarchy of local TDGs
N2  - Many recent variants of Tree Adoining Grammars (TAG) allow an underspecifiaction of the parent relation between nodes in a tree, i.e. they do not deal with fully specified trees as it is the case with TAGs.Such TAG variants are for example Description Tree Grammars (DTG), Unordered Vector Grammars with Dominance Links (UVG-DL), a definition of TAGs via so-called quasi trees and Tree Description Grammars (TDG. The last TAg variant, local TDG, is an extension of TAG generating Tree Descriptions. Local TDGs even allow an underspecification of the dominance relation between node names and thereby provide the possibility to generate underspecified representations for structural ambiguities such as quantifier scope ambiguities. This abstract deals with formal properties of local TDGs. A hierarchiy of local TDGs is established together with a pumping lemma for local TDGs of a certain rank.
KW  - Tree Adoining Grammar
KW  - Description Tree Grammar
KW  - Unordered Vector Grammar with Dominance Link
Y1  - 1998
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/9866
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-1110468
UR  - http://www.sfs.uni-tuebingen.de/~lk/papers/tag+4.ps.gz
N1  - Erschienen in: Anne Abeillé ; Tilman Becker ; Giorgio Satta ; K. Vijay-Shanker (Hrsg.): Proceedings of the Fourth International Workshop on Tree Adjoining Grammars and Related Frameworks (TAG+4), 	Philadelphia : University of Pennsylvania, August 1998, S. 76-79
ER  -