%0 Journal Article %J Intrinsic and Extrinsic Evaluation Measures for Machine Translation and/or Summarization %D 2005 %T Evaluating Summaries and Answers: Two Sides of the Same Coin? %A Jimmy Lin %A Demner-Fushman,D. %X This paper discusses the convergencebetween question answering and multi- document summarization, pointing out implications and opportunities for knowl- edge transfer in both directions. As a case study in one direction, we discuss the recent development of an automatic method for evaluating definition questions based on n-gram overlap, a commonly- used technique in summarization evalua- tion. In the other direction, the move to- wards topic-oriented summaries requires an understanding of relevance and topi- cality, issues which have received atten- tion in the question answering literature. It is our opinion that question answering and multi-document summarization repre- sent two complementary approaches to the same problem of satisfying complex user information needs. Although this points to many exciting opportunities for system- building, here we primarily focus on im- plications for system evaluation. %B Intrinsic and Extrinsic Evaluation Measures for Machine Translation and/or Summarization %P 41 - 41 %8 2005/// %G eng