Let\'s consider a multivariate regression problem (2 response variables: Latitude and Longitude). Currently, a few machine learning model implementations like Support Vector Reg
For use without pipeline, put estimator__ before parameters:
estimator__
param_grid = {'estimator__min_samples_split':[10, 50], 'estimator__min_samples_leaf':[50, 150]} gb = GradientBoostingRegressor() gs = GridSearchCV(MultiOutputRegressor(gb), param_grid=param_grid) gs.fit(X,y)