Virginia Tech. Digital Library Research LaboratoryVirginia Tech. Department of Computer ScienceWu, SichaoZhang, YaoFox, Edward A.Chitturi, KiranKanan, Tarek2015-05-222015-05-222012-10-17http://hdl.handle.net/10919/52540This module introduces the methods to improve the recall of information retrieval systems, mainly focuses on relevance feedback and query expansion.7 pagesapplication/pdfen-USIn CopyrightComputer scienceDigital librariesRelevance feedbackQuery expansionLearning object