Kim, YanggonYou, Jongsung2015-12-172015-12-172013-08-062013-05TSP2013Youhttp://hdl.handle.net/11603/1996(M.S.) -- Towson University, 2013.With the advances in Social networks, many fields use Social networks service to increase user. The most popular Social networks service is Twitter. Companies use Twitter to get information about film advertisement, product advertisement, and approval ratings for such thing like the president. In the previous research, we searched influence nodes related to political fields using the Data Gathering Tool and gave weight to the influence nodes. Users express opinion's using tweets on Twitter that is both positive and negative. Many researchers study positive and negative tweet to use for a survey. So we measure presidential approval rating using influence weight and positive and negative weight and compare the measurement results and real approval ratings. In conclusion, we confirm whether Twitter approval ratings reflect real approval ratings or not.application/pdfvi, 45 pagesengCopyright protected, all rights reserved.Text