@TECHREPORT{AICPub622:1984, AUTHOR={Shieber, Stuart M.}, TITLE={Evidence Against The Context-Freeness Of Natural Language}, ADDRESS={333 Ravenswood Ave., Menlo Park, CA 94025}, INSTITUTION={AI Center, SRI International}, MONTH={Jun}, NUMBER={330}, YEAR={1984}, KEYWORDS={Natural Language}, ABSTRACT={In searching for universal constraints on the class of natural languages, linquists have investigated a number of formal properties, including that of context-freeness. Soon after Chomsky’s categorization of languages into his well-known hierarchy [Chomsky, 1963], the common conception of the context-free class of languages as a tool for describing natural languages was that it was too restrictive a class–interpreted strongly (as a way of characterizing structure sets) and even weakly (as a way of characterizing string sets).} }
