fixed a bug in cv composer

cdplib/ml_validation/CVComposer.py

@@ -76,8 +76,8 @@ class CVComposer:
             X = pd.concat([X_train, X_test], ignore_index=False, axis=0)
 
         else:
-            cv = self.dummy_cv(train_size=len(X_train),
-                               test_size=len(X_test))
+            cv = self.dummy_cv(train_set_size=len(X_train),
+                               test_set_size=len(X_test))
 
             X = np.concatenate([X_train, X_test])