The TIPSTER SUMMAC Text Summarization Evaluation Inderjeet Mani author David House author Gary Klein author Lynette Hirschman author Therese Firmin author Beth Sundheim author 1999-06 text Ninth Conference of the European Chapter of the Association for Computational Linguistics Henry S Thompson editor Alex Lascarides editor Association for Computational Linguistics Bergen, Norway conference publication mani-etal-1999-tipster https://aclanthology.org/E99-1011/ 1999-06 77 85