TypeError: 'NoneType' object is not subscriptable self._space.max() #502
Description
I am receiving this error whenever the init_points are fulfilled.
File "/home/workspace/xray-classifier/train_impaction_opt.py", line 538, in train_opt
optimizer.maximize(
File "/home/anaconda3/envs/xray_classifier/lib/python3.10/site-packages/bayes_opt/bayesian_optimization.py", line 372, in maximize
x_probe = self.suggest(util)
File "/home/anaconda3/envs/xray_classifier/lib/python3.10/site-packages/bayes_opt/bayesian_optimization.py", line 276, in suggest
y_max_params=self._space.params_to_array(self._space.max()['params']))
TypeError: 'NoneType' object is not subscriptable
with these constraits
# Define the function to optimize
pbounds = {
"lr": (1e-3, 1e-4 / 8),
'weight_decay': (0.01, 0.0001),
'freeze': (0, 6),
# Focal loss gamma and alpha
'gamma': (0.5, 5),
'alpha': (0.1, 0.9)
}
I printed the values and it shows this
self._gp: GaussianProcessRegressor(alpha=1e-06, kernel=Matern(length_scale=1, nu=2.5),
n_restarts_optimizer=5, normalize_y=True,
random_state=RandomState(MT19937) at 0x71EBCD6B6D40)
self.constraint: None
self._space._target_max(): None
self._space.bounds: [[1.00e-01 9.00e-01]
[0.00e+00 6.00e+00]
[5.00e-01 5.00e+00]
[1.00e-03 1.25e-05]
[1.00e-02 1.00e-04]]
Traceback (most recent call last):
File "/home/anaconda3/envs/xray_classifier/lib/python3.10/site-packages/bayes_opt/bayesian_optimization.py", line 381, in maximize
x_probe = next(self._queue)
File "/home/anaconda3/envs/xray_classifier/lib/python3.10/site-packages/bayes_opt/bayesian_optimization.py", line 40, in __next__
raise StopIteration("Queue is empty, no more objects to retrieve.")
StopIteration: Queue is empty, no more objects to retrieve.