By Keisuke Ishibashi (NTT Corporation) , Tsuyoshi Kondoh (NTT Corporation) , Shigeaki Harada (NTT Service Integration Laboratories) , Tatsuya Mori (NTT Service Integration Laboratories) , Ryoichi Kawahara (NTT Service Integration Laboratories) , Shoichiro Asano (National Information Institute)
By Tsuyoshi Kondoh (NTT Corporation) , Keisuke Ishibashi (NTT Corporation)
By Atsushi Kobayashi (NTT Corporation) , Tsuyoshi Kondoh (NTT Corporation) , Keisuke Ishibashi (NTT Corporation)