Finding Negative Key Phrases for Internet Advertising Campaigns using Wikipedia Martin Scaiano author Diana Inkpen author 2011-09 text Proceedings of the International Conference Recent Advances in Natural Language Processing 2011 Ruslan Mitkov editor Galia Angelova editor Association for Computational Linguistics Hissar, Bulgaria conference publication scaiano-inkpen-2011-finding https://aclanthology.org/R11-1093/ 2011-09 648 653