Fix signature name.
Fix signature name.


Former-commit-id: 04543bd31cda05b35b7ea3b6db7441e899f2c454
clab/dynet,shuheik/dynet,clab/cnn,danielhers/dynet,xunzhang/dynet,chunyang-wen/dynet,chunyang-wen/dynet,danielhers/dynet,clab/dynet,clab/dynet,danielhers/dynet,clab/cnn,shuheik/dynet,xunzhang/dynet,xunzhang/dynet,xunzhang/dynet,shuheik/dynet,shuheik/dynet,clab/dynet,clab/dynet,clab/dynet,clab/dynet,danielhers/dynet,shuheik/dynet,danielhers/dynet,shuheik/dynet,shuheik/dynet,chunyang-wen/dynet,danielhers/dynet,chunyang-wen/dynet,clab/cnn,danielhers/dynet