TITLE: CORRECTING ILLEGAL NP OMISSIONS USING LOCAL FOCUS AUTHORS: Linda Z. Suri COMMENTS: From Proceedings of the 30th Annual Meeting of the Association of Computational Linguistics (ACL), 1992 ABSTRACT: The work described here is in the context of developing a system that will correct the written English of native users of American Sign Language (ASL) who are learning English as a second language. In this paper, we focus on one error class that we have found to be particuarly prevalent: the illegal omissions of NP's