Technical Reports (CIS)

Document Type

Technical Report

Date of this Version

July 1988


University of Pennsylvania Department of Computer and Information Science Technical Report No. MS-CIS-88-51.


We apply a complexity theoretic notion of feasible learnability called "polynomial learnability" to the evaluation of grammatical formalisms for linguistic description. We show that a novel, nontrivial constraint on the degree of "locality" of grammars allows not only context free languages but also a rich class of mildly context sensitive languages to be polynomially learnable. We discuss possible implications of this result to the theory of natural language acquisition.



Date Posted: 18 September 2007