Using Syntactic and Shallow Semantic Kernels to Improve Multi-Modality Manifold-Ranking for Topic-Focused Multi-Document Summarization Yllias Chali author Sadid A Hasan author Kaisar Imam author 2011-11 text Proceedings of 5th International Joint Conference on Natural Language Processing Haifeng Wang editor David Yarowsky editor Asian Federation of Natural Language Processing Chiang Mai, Thailand conference publication chali-etal-2011-using https://aclanthology.org/I11-1123/ 2011-11 1098 1106