Combining Lexical and Grammatical Features to Improve Readability Measures for First and Second Language Texts.

Michael Heilman Kevyn Collins-Thompson Jamie Callan Maxine Eskenazi Combining Lexical and Grammatical Features to Improve Readability Measures for First and Second Language Texts. 460-467 2007 HLT-NAACL http://www.aclweb.org/anthology/N07-1058 conf/naacl/2007 db/conf/naacl/naacl2007.html#HeilmanCCE07