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1 DEIM Forum 2016 C Twitter,, Twitter,,, Bag of Words, Latent Semantic Indexing,.,,,, Twitter,, Twitter,, 1. SNS, SNS Twitter 1,,, Twitter,,,,, Twitter,,,,,,,, Twitter, 1 ( 1),,,.,, 1,

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8 6., Accuracy, AUC(Area Under the Curve), Precision, Recall, F, URL,,,, 3,,,,, 3.,,,, 570, [8] Yuxin Peng, Jia Yao. AdaOUBoost: adaptive over-sampling and under-sampling to boost the concept learning in large scale imbalanced data sets. Proceedings of the international conference on Multimedia information retrieval. ACM, [1] WISS2010, 41-46, [2] Sungho Jeon, Sungchul Kim, and Hwanjo Yu. Don t Be Spoiled by Your Friends: Spoiler Detection in TV Program Tweets. Seventh International AAAI Conference on Weblogs and Social Media, [3],,, Twitter 19, , [4],,,,, Twitter MVE, 110(457), , [5], 96 (GN), [6], SNS 96 (GN), [7] Samuel Brody, Nicholas Diakopoulos. Cooooooooooooooollllllllllllll!!!!!!!!!!!!!!: using word lengthening to detect sentiment in microblogs. Proceedings of the 2011 Conference on Empirical Methods in Natural Language Processing, 562-

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