fix OneHot

Author: antoinedemathelin

adapt/instance_based/_tradaboost.py

@@ -320,7 +320,10 @@ def _boost(self, iboost, Xs, ys, Xt, yt,
 
         if not isinstance(self, TrAdaBoostR2):
             if isinstance(estimator, BaseEstimator):
-                ohe = OneHotEncoder(sparse=False)
+                try:
+                    ohe = OneHotEncoder(sparse=False)
+                except:
+                    ohe = OneHotEncoder(sparse_output=False)
                 ohe.fit(y.reshape(-1, 1))
                 ys = ohe.transform(ys)
                 yt = ohe.transform(yt)