Priority Union and Generalization in Discourse Grammars

Details Priority Union and Generalization in Discourse Grammars Priority Union and Generalization in Discourse Grammars

1994-05-30

arxiv.org/abs/cmp-lg/9405030v1

In Proceedings of ACL-94

Computer Science

Computation and Language

8 pages, Unix compressed and uuencoded Postscript file To appear in ACL-94

Scientific paper

We describe an implementation in Carpenter's typed feature formalism, ALE, of a discourse grammar of the kind proposed by Scha, Polanyi, et al. We examine their method for resolving parallelism-dependent anaphora and show that there is a coherent feature-structural rendition of this type of grammar which uses the operations of priority union and generalization. We describe an augmentation of the ALE system to encompass these operations and we show that an appropriate choice of definition for priority union gives the desired multiple output for examples of VP-ellipsis which exhibit a strict/sloppy ambiguity.

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