The design of a computer language for linguistic information
ACL '84 Proceedings of the 10th International Conference on Computational Linguistics and 22nd annual meeting on Association for Computational Linguistics
The mapping unit approach to subcategorization
HLT '91 Proceedings of the workshop on Speech and Natural Language
A practical approach to multiple default inheritance for unification-based lexicons
Computational Linguistics - Special issue on inheritance: II
Compound nouns in a unification-based MT system
ANLC '92 Proceedings of the third conference on Applied natural language processing
Situation semantics and machine translation
EACL '89 Proceedings of the fourth conference on European chapter of the Association for Computational Linguistics
A language for the statement of binary relations over feature structures
EACL '91 Proceedings of the fifth conference on European chapter of the Association for Computational Linguistics
Multiple default inheritance in a unification-based lexicon
ACL '91 Proceedings of the 29th annual meeting on Association for Computational Linguistics
User-defined nonmonotonicity in unification-based formalisms
ACL '95 Proceedings of the 33rd annual meeting on Association for Computational Linguistics
Asymmetry in parsing and generating with unification grammars: case studies from ELU
ACL '90 Proceedings of the 28th annual meeting on Association for Computational Linguistics
CLG(n): constraint logic grammars
COLING '90 Proceedings of the 13th conference on Computational linguistics - Volume 3
ELU: an environment for machine translation
COLING '90 Proceedings of the 13th conference on Computational linguistics - Volume 3
On the portability of complex constraint-based grammars
COLING '94 Proceedings of the 15th conference on Computational linguistics - Volume 2
Generating French with a reversible unification grammar
COLING '90 Proceedings of the 13th conference on Computational linguistics - Volume 2
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This paper describes some of the features of a sophisticated language and environment designed for experimentation with unification-oriented linguistic descriptions. The system, which is called und, has to date been used successfully as a development and prototyping tool in a research project on the application of situation schemata to the representation of real text, and in extensive experimentation in machine translation.While the ud language bears close resemblances to all the well-known unification grammar formalisms, it offers a wider range of features than any single alternative, plus powerful facilities for notational abstraction which allow users to simulate different theoretical approaches in a natural way.After a brief discussion of the motivation for implementing yet another unification device, the main body of the paper is devoted to a description of the most important novel features of und.The paper concludes with a discussion of some questions of implementation and completeness.