Update hyperparameters for sklearn model
Update hyperparameters for sklearn model

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