Adjective Deletion for Linguistic Steganography and Secret Sharing Ching-Yun Chang author Stephen Clark author 2012-12 text Proceedings of COLING 2012 Martin Kay editor Christian Boitet editor The COLING 2012 Organizing Committee Mumbai, India conference publication chang-clark-2012-adjective https://aclanthology.org/C12-1031/ 2012-12 493 510