http://cacm.acm.org/magazines/2012/2/145399-text-mining-the-voice-of-the-people/fulltext
ʂ̃TCgɃWv悤ƂĂ܂BXΏL̃NNbNĂ
UPLIFTōLȂő̌܂傤IKȉ{Ct܂I