... a graphical environment for graph-based NLP developed at the Uni-versity of Michigan. LexNet includesLexRank (for text summarization), bi-ased LexRank (for passage retrieval), andTUMBL (for ... Presentation Sessions, pages 45–48,Sydney, July 2006.c2006 Association for Computational LinguisticsLexNet: A Graphical Environment for Graph-Based NLPDragomir R. Radev , G¨unes¸ Erkan , Anthony ... demonstrate these tools on a variety ofNLP tasks including summarization, ques-tion answering, and prepositional phraseattachment.1 IntroductionWe will present a series of graph-based tools for avariety...