add ArgmaxNodeOp
add ArgmaxNodeOp

marian-nmt/marian-train,afaji/Marian,emjotde/amunmt,afaji/Marian,emjotde/Marian,emjotde/amunmt,emjotde/amunn,amunmt/marian,marian-nmt/marian-train,emjotde/amunn,amunmt/marian,DianaDespa/marian-train,emjotde/Marian,marian-nmt/marian-train,DianaDespa/marian-train,amunmt/marian,marian-nmt/marian-train,afaji/Marian,emjotde/amunmt,marian-nmt/marian-train,emjotde/amunmt,emjotde/amunn,DianaDespa/marian-train,emjotde/amunn,afaji/Marian,DianaDespa/marian-train,DianaDespa/marian-train