fix bug in lr
fix bug in lr

miaecle/deepchem,peastman/deepchem,Agent007/deepchem,rbharath/deepchem,deepchem/deepchem,miaecle/deepchem,ktaneishi/deepchem,deepchem/deepchem,lilleswing/deepchem,miaecle/deepchem,lilleswing/deepchem,ktaneishi/deepchem,Agent007/deepchem,peastman/deepchem,Agent007/deepchem,lilleswing/deepchem,ktaneishi/deepchem,joegomes/deepchem,joegomes/deepchem,rbharath/deepchem