
improve the gradient reconstructions
(using a rule to guess if looping over i or 
j first is better)
See implementation docs for details

cjlin1/libsvm,sdgdsffdsfff/libsvm,caidongyun/libsvm,asifmadnan/libsvm,cjlin1/libsvm,ntucllab/hintsvm,Maluuba/libsvm,melissa-mccoy/libsvm,caidongyun/libsvm,G-P-S/libsvm,G-P-S/libsvm,mhdella/libsvm,sdgdsffdsfff/libsvm,sdgdsffdsfff/libsvm,Guokr1991/libsvm,ChinaQuants/libsvm,Adoni/libsvm,cjlin1/libsvm,melissa-mccoy/libsvm,caidongyun/libsvm,androidYibo/libsvm,phoenixstar7/libsvm,DaveGeneral/libsvm,TKlerx/libsvm,Guokr1991/libsvm,cypro666/libsvm,DaveGeneral/libsvm,TKlerx/libsvm,asifmadnan/libsvm,dejon97/libsvm,dejon97/libsvm,asifmadnan/libsvm,sdgdsffdsfff/libsvm,Maluuba/libsvm,toothacher17/libsvm,mvtuong/Yelp-Challenge,ntucllab/hintsvm,androidYibo/libsvm,G-P-S/libsvm,cypro666/libsvm,mhdella/libsvm,phoenixstar7/libsvm,sdgdsffdsfff/libsvm,TKlerx/libsvm,G-P-S/libsvm,cypro666/libsvm,mhdella/libsvm,melissa-mccoy/libsvm,Maluuba/libsvm,dejon97/libsvm,ChinaQuants/libsvm,TKlerx/libsvm,Adoni/libsvm,mvtuong/Yelp-Challenge,cypro666/libsvm,cypro666/libsvm,toothacher17/libsvm,ChinaQuants/libsvm,toothacher17/libsvm,phoenixstar7/libsvm,G-P-S/libsvm,asifmadnan/libsvm,TKlerx/libsvm,cjlin1/libsvm,Maluuba/libsvm,caidongyun/libsvm,phoenixstar7/libsvm,mhdella/libsvm,cypro666/libsvm,asifmadnan/libsvm,ChinaQuants/libsvm,Maluuba/libsvm,dejon97/libsvm,ChinaQuants/libsvm,phoenixstar7/libsvm,G-P-S/libsvm,DaveGeneral/libsvm,Maluuba/libsvm,caidongyun/libsvm,DaveGeneral/libsvm,phoenixstar7/libsvm,toothacher17/libsvm,Guokr1991/libsvm,ChinaQuants/libsvm,mvtuong/Yelp-Challenge,ntucllab/hintsvm,melissa-mccoy/libsvm,mhdella/libsvm,cjlin1/libsvm,ntucllab/hintsvm,DaveGeneral/libsvm,DaveGeneral/libsvm,melissa-mccoy/libsvm,mhdella/libsvm,cjlin1/libsvm,caidongyun/libsvm,androidYibo/libsvm,androidYibo/libsvm,androidYibo/libsvm,toothacher17/libsvm,Adoni/libsvm,mvtuong/Yelp-Challenge,ntucllab/hintsvm,Guokr1991/libsvm,Guokr1991/libsvm,dejon97/libsvm,androidYibo/libsvm,dejon97/libsvm,melissa-mccoy/libsvm,Guokr1991/libsvm,TKlerx/libsvm,Adoni/libsvm,ntucllab/hintsvm,toothacher17/libsvm,sdgdsffdsfff/libsvm,asifmadnan/libsvm