TAC 2011 Guided Summarization of ICL

For the update summarization task of TAC 2011, we submitted two runs applying a improved graph-based sentence ranking method. The difference between these two runs is that the second one aims to acquire the category words and use them for extracting information-rich sentences. For the update summarization task, we adopt similar methods used in previous evaluations and simultaneously penalize the information overlap between docset B and docset A.