http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.105.3163&rep=rep1&type=pdf
ʂ̃TCgɃWv悤ƂĂ܂BXΏL̃NNbNĂ
UPLIFTōLȂő̌܂傤IKȉ{Ct܂I