Generation and Synchronous Tree-Adjoining Grammars-英文文献.pdf

Generation and Synchronous Tree-Adjoining Grammars Stuart M. Shieber Yves Schabes Aiken Computation Laboratory Department of Computer and Division of Applied Sciences Information Science Harvard University University of Pennsylvania Cambridge, MA 02138 Philadelphia, PA 19104 A b s t r a c t tion. As these researchers note, the properties of TAGs Tree-adjoining grammars (TAG) have been proposed as for describing the syntactic structuring of a natural lan- a formalism for generation based on the intuition that guage mesh quite naturally with the requirements of the extended domain of syntactic locality that TAGs natural-language generation. Nonetheless, generation is provide should aid in localizing semantic dependencies not, as typically viewed, a problem in natural-language as well, in turn serving as an aid to generation from syntax. Any system that attempts to use the TAG for- semantic representations. We demonstrate that this malism as a substrate upon which to build a generation intuition can be made concrete by using the formal- component must devise some mechanism by which a ism of synchronous tree-adjoining grammars. The use TAG can articulate appropriately with semantic infor- of synchronous TAGs for generation