Nouveau-ROUGE: A Novelty Metric for Update Summarization

An update summary should provide a fluent summarization of new information on a time-evolving topic, assuming that the reader has already reviewed older documents or summaries. In 2007 and 2008, an annual summarization evaluation included an update summarization task. Several participating systems produced update summaries indistinguishable from human-generated summaries when measured using ROUGE. However, no machine system performed near human-level performance in manual evaluations such as pyramid and overall responsiveness scoring.