code: def objective(x):
      estimator = SVR(kernel="linear", C=x[0])
      estimator.fit(X_train, y_train)
      return 1 - estimator.score(X_test, y_test)
  
imports: from sklearn.svm import SVR
  from sklearn.datasets import load_iris
  from sklearn.model_selection import train_test_split
label_desc: Use image node_id 1 for calling a global function with example usage: objective(x) and returns: unknown