Takeshi Yamakawa Keiichi Horio Takahiro Tanaka Advanced Learning of SOR Network Employing Evaluation-based Topology Representing Network. 1 2007 HIS http://doi.ieeecomputersociety.org/10.1109/HIS.2007.18 conf/his/2007 db/conf/his/his2007.html#YamakawaHT07