Changes default maximization strategy to UCB

Author: fmfn

bayes_opt/bayesian_optimization.py

@@ -215,7 +215,7 @@ def set_bounds(self, new_bounds):
     def maximize(self,
                  init_points=5,
                  n_iter=25,
-                 acq='ei',
+                 acq='ucb',
                  kappa=2.576,
                  xi=0.0,
                  **gp_params):
@@ -340,4 +340,4 @@ def points_to_csv(self, file_name):
 
         points = np.hstack((self.X, np.expand_dims(self.Y, axis=1)))
         header = ', '.join(self.keys + ['target'])
-        np.savetxt(file_name, points, header=header, delimiter=',')
+        np.savetxt(file_name, points, header=header, delimiter=',')