some performance enhancements in crammer-singer model
some performance enhancements in crammer-singer model

amueller/pystruct,pystruct/pystruct,pystruct/pystruct,massmutual/pystruct,d-mittal/pystruct,massmutual/pystruct,d-mittal/pystruct,amueller/pystruct,wattlebird/pystruct,wattlebird/pystruct