IEICE Transactions on Information and Systems, 2012, 95(3), P.888-891
Abstract
This work was supported by Priority Research Centers Program through the NRF of Korea funded by the MEST (2011-0022980), and this work was partly supported by the IT R&D program of MKE/KEIT [K1001824] and this work was supported by the research fund of Hanyang University (HY-2011-201100000000210).