Topic-Focused Multi-Document Summarization Using an Approximate Oracle Score John M Conroy author Judith D Schlesinger author Dianne P O’Leary author 2006-07 text Proceedings of the COLING/ACL 2006 Main Conference Poster Sessions Association for Computational Linguistics Sydney, Australia conference publication conroy-etal-2006-topic https://aclanthology.org/P06-2020/ 2006-07 152 159